383 free websites. Every one checked.

An open-source framework for building apps on language models, with ready parts for prompts, tools, document search and agents. MIT licensed.

A Python framework for teams of AI agents, each with a role and a goal, working through tasks together. MIT licensed, with a paid hosted platform on top.

A TypeScript toolkit for adding AI chat, streaming and tool calls to web apps, with one API across many model providers. Apache 2.0 licensed.

Monitoring for AI agents. Records each run so you can replay it, see what it cost and find where it went wrong. The SDK is MIT licensed.

One of the first autonomous agent projects, now a platform for building agents that run tasks on their own. The platform code is under the Polyform Shield License and the rest is MIT, so it is not fully open source.

An open-source framework for building multi-agent systems and studying how agents work together. Apache 2.0 licensed.

Connects AI agents to hundreds of apps like Gmail, Slack and GitHub, and handles the logins and API calls. The SDK is MIT; the connections run through Composio's service.

A Stanford framework that swaps hand-written prompts for code. You describe what each step should do and it tunes the prompts for you. MIT licensed.

Secure cloud sandboxes where AI agents can run code without touching your machine. The SDK is open source; the sandboxes run on E2B's hosted service.

A memory layer for AI agents, so an assistant remembers users and past conversations between sessions. Apache 2.0, with a hosted version.

A multi-agent framework that gives separate agents roles like product manager, architect and engineer so they build software together. MIT licensed.

Ask questions about your own documents with an AI that can run fully offline, so no data leaves your machine. Apache 2.0 licensed.

The main hub for open AI models and datasets. Browse and download models for free, and try many in the browser.

One API for hundreds of AI models from many companies. Some models are free to call, with rate limits.

Run open AI models for text, images and speech on Cloudflare's network. The free plan includes a daily allowance.

Speech-to-text and text-to-speech APIs fast enough for live voice agents. New accounts get $200 in free credit with no card, then pay as you go.

An open-source AI API for images and text that you can call with a plain web address. Basic use needs no sign-up.

Runs open-source AI models through a cloud API, and lets you try many of them in the browser first. You pay for the compute you use.

Runs open language models on your own machine. One command pulls a model and starts a local API that your other tools can call.

AI pair programming in the terminal. It edits files in your Git repo and commits each change with a message.

A coding agent that lives in VS Code. It reads your project, edits files, and runs commands, asking before each step.

A browsable catalog of ready-made agents, slash commands, skills, hooks and MCP setups for Claude Code, each installed with one command. MIT licensed.

An open-source VS Code and JetBrains extension for AI autocomplete, chat, and agent tasks. Bring your own model, local or hosted.

An open-source agent that plans a task, researches it, and writes the code. Development has slowed since 2025.

Lets a language model run code on your own computer from a chat prompt. Works with open models and asks before executing.

An open-source coding agent that runs in the terminal with any model provider. One of the most-starred projects on GitHub.

An open-source AI software engineer that works in a sandboxed environment. It can write code, run it, and browse the web to finish a task.

A search engine built for coding questions. It answers with generated code and explanations, citing the documentation and forum posts it pulled from.

A Claude skill that writes prompts for other AI tools. Say which tool you are aiming at, an image model, a video model, or a coding agent, and it asks at most three questions before handing back one prompt ready to paste.

A searchable leaderboard of open skills for Claude Code and other AI agents, ranked by install count. Add any of them to your agent with one npx command.

Point it at a GitHub issue and it tries to fix the bug on its own using the language model you choose. Built by a Princeton research group.

An AI assistant for JetBrains IDEs. It started as a bot that turned GitHub issues into pull requests.

A self-hosted code completion server you run on your own hardware, so no code leaves your network. Plugs into VS Code, Vim, and JetBrains.

An answer engine that searches the web and writes a sourced answer with citations you can click through and check.

Upload your own documents and it becomes an AI assistant that answers only from those sources, and can generate study guides, summaries, and audio overviews from them.

Anthropic's AI assistant for writing, analysis, coding and research. There is a free plan with usage limits.

OpenAI's AI assistant for questions, writing, images and code. The free plan has usage limits.

Ask it a yes/no research question and it searches published papers to show what the scientific evidence actually says, with citations.

A free AI chat assistant from the Chinese lab DeepSeek, strong at math and code. Its privacy policy says data is stored on servers in China.

Ask a research question in plain English and get back a table of real papers, one row each, with the finding summarized.

Highlights and saves passages from web pages and YouTube transcripts, and will summarise a video from its transcript.

A self-hostable AI assistant that answers questions from your own notes and documents, or from the web. Open source with a hosted option.

Upload or open a research paper and highlight any confusing passage. It explains that section in plain language and answers questions about the PDF.

Paste a YouTube link and it generates a timestamped, section-by-section written summary so you can skim a long video instead of watching it.

An AI workspace for your saved sources. Collect articles, videos and PDFs, ask questions across them, and turn them into your own writing.

Turns speech into text in 99 languages, running on your own machine. It can also translate what it hears into English.

Lifelike AI voices for narration and dubbing, plus voice cloning. The free plan includes a small amount of audio each month.

Describe a song or paste your own lyrics and it makes a full track with vocals. The free plan gives a set number of credits each day.

A free browser tool that makes a voice recording sound like it was taped in a studio, stripping room echo and background noise.

Splits a song into separate vocal, drum, bass, and instrument tracks. The free tier covers a short preview of each.

A free, open-source voice studio that runs on your own computer. Clone a voice from a few seconds of audio, generate speech, and dictate into any app. MIT licensed.

Connects apps into automated workflows you build on a canvas, with a code step for anything the visual nodes cannot do. It is source-available under the Sustainable Use License, not OSI open source.

A library of 70,000+ ebooks whose copyright has expired, downloadable as plain text or EPUB with no account needed.

An Internet Archive project that lets you borrow scanned books online for free, like a library card catalog with actual lending.

A single search bar over Library Genesis, Sci-Hub, and other book/paper mirrors at once.

Shadow library index, copyright-infringing. Use your own judgment.

A searchable mirror of pirated books and academic texts you can download by title, author, or ISBN.

Shadow library, a copyright-infringing book mirror. Use your own judgment.

A search engine for PDF files scattered across the web: books, papers, and manuals.

Mixed legitimacy, indexing both public-domain and unlicensed scans. Use your own judgment.

Free research and charts on big global problems like health, poverty and climate, with all the data downloadable.

The St. Louis Fed's free database of hundreds of thousands of economic data series, from inflation to jobs, with charts you can build.

Animated bubble charts of global development data over time. The tool behind Hans Rosling's famous talks.

Google's open knowledge graph of public statistics. Ask about a place and it charts economy, health, and climate data.

David McCandless's infographics, which turn data and ideas into clear, well-designed visuals.

Live estimated counters for internet activity, like searches made, emails sent and websites online.

Notebooks for exploring and charting data with live JavaScript code. Has a free plan.

Visual essays that explain culture and ideas with data, charts and interactive stories.

Economic indicators like GDP, inflation and interest rates for nearly every country, with forecasts.

Charts and infographics that explain the economy, markets and technology at a glance.

Free development data from the World Bank, covering thousands of indicators for every country.

Population, demographic, and ranking data for countries, states, and cities, with charts and tables.

Live counters for world population, births, deaths and other statistics, estimated second by second.

Generate colour palettes by pressing the space bar, lock the ones you want to keep, and keep going until the rest fit. Exports to CSS, SVG, or an image.

Design and prototype interfaces in the browser, with files stored in open web formats. It runs on your own server if you want it there.

Drop in a screenshot and it wraps it in a device frame with a styled background, for App Store or marketing-ready product mockups.

Free SVG background generator covering waves, blobs, grids, and more. Set the colours and download the file.

Drag-and-drop design for social posts, flyers, slides, logos and short videos, with thousands of templates. The free plan covers most everyday design work.

A reference of checklists for common interface pieces. Tells you what a button, form, or modal still needs before you call it finished.

A curated feed of four-colour palettes you can copy as hex codes, sorted by popularity and tagged by mood like pastel or retro.

Makes a favicon from text, an emoji, or an uploaded image, and hands back the full set of sizes with the HTML to paste in.

Generates font pairings with a slider for how similar or contrasting you want the two typefaces. Lock one and shuffle the other.

Over 160,000 free fonts with the license shown on each one, so you can check which allow commercial use before you download.

Generates SVG blobs, waves, and gradient backgrounds. Every shape can be randomised and exports as SVG or PNG.

A library of repeatable SVG background patterns. Pick one, set the colour and opacity, and copy the CSS.

An AI design agent. Describe your brand or project and it makes logos, posters, social graphics and other visuals you can then edit.

An SVG pattern generator with controls for stroke, spacing, rotation, and colour. Copies out as SVG or CSS.

Describe a website and it drafts the sitemap and page wireframes, which you can export to Figma or Webflow.

Drop a screenshot into a photo of a laptop, phone, or t-shirt and get a finished product shot. Now part of Canva, so the old smartmockups.com address redirects there and a free Canva account is required.

A free browser-based vector editor for logos and simple graphics, with SVG export and background removal, and nothing to install.

Upload a picture of some text and it finds the font, or the closest matches, from a catalog of over 200,000 fonts.

Build a regular expression and see it match live against your own test text, with a plain-English breakdown of what each part does.

Browser support tables for HTML, CSS, and JavaScript features. Shows which versions ship a feature and what share of users that covers.

Paste a shell command and it highlights each flag and argument individually, pulling the explanation straight from the man page.

A library of CSS animations you configure in the browser. Pick the effect, tune the timing, and copy the keyframes.

A visual editor for CSS box shadows, including layered ones, with the rule written out as you drag.

Shows how much an npm package adds to your JavaScript bundle and how long it takes to download, before you install it.

Paste in code and it renders a styled, syntax-highlighted image of it, for sharing snippets that look good in a tweet or a slide.

A set of code formatters, minifiers, and converters (JSON, XML, Base64, and more) for cleaning up or transforming code in the browser.

A visual gradient editor that outputs the CSS. Handles linear and radial, multiple stops, and shows a fallback colour.

Paste messy JSON and get it indented and readable. Validates as it goes and points at the line that breaks.

Paste a JSON Web Token to decode its header and payload and check its signature. Also lists JWT libraries by language.

A quick tour of a programming language on one page, written as commented code. Covers dozens of languages and tools.

A Python tool from Microsoft that converts PDF, Word, Excel, PowerPoint, images, and audio into Markdown for feeding to a language model.

NASA's free, open-source 3D globe engine for developers. Build your own map or Earth viewer on it, or try the live web examples.

Generates the two-shadow CSS that produces the soft extruded look. Drag the sliders and copy the rule.

A collection of cheat sheets for programming languages and frameworks, one page per language.

A full workspace for building and testing APIs: send requests, save collections, write tests and share them with a team. Free plan, account required.

Same idea as Carbon, turning pasted code into a shareable image, but with a different set of gradient themes. Made by Raycast.

Build and test regular expressions with live highlighting, a cheat sheet and saved community patterns. Supports JavaScript and PCRE.

Sends HTTP requests from the browser to test an API, with no install. Shows the response and can turn the request into code.

Step-by-step learning roadmaps for developer roles and skills, such as frontend, backend and DevOps, built and kept up by the community.

Self-hosted project management with Kanban boards, sprints, task dependencies, and time tracking. Runs as a Docker stack with PostgreSQL on your own server, syncs issues from GitHub and GitLab, and ships an MCP server so Claude can read projects and create tasks. Source-available rather than OSI open source.

An infinite whiteboard for sketching diagrams and wireframes in a deliberately hand-drawn style, with live multiplayer collaboration.

A free, open-source infinite canvas for sketching diagrams and wireframes, with real-time multiplayer and easy embedding.

A shared whiteboard that opens instantly at a URL with no signup. Draw, then send the link to whoever needs to see it.

Free, open-source diagram editor for flowcharts, org charts and network maps. Runs in the browser or as a desktop app, and your files stay where you save them.

Turns a block of text into diagrams, flowcharts, mind maps and charts you can edit. Free to start.

A computational engine. Type a math, physics, or data question and it works out a step-by-step answer instead of returning search results.

Free interactive science and math simulations from the University of Colorado Boulder. Physics, chemistry, biology and math, all in the browser.

Free, peer-reviewed college textbooks from a Rice University nonprofit, covering most intro-level subjects, as PDF or online.

Short, hands-on lessons in math, science and coding where you solve problems as you go. Free to start; the full course library needs a paid Premium plan.

Online courses, certificates, and degrees from universities and companies such as Stanford, Google, and DeepLearning.AI. Certificates and degrees are paid.

A hub of interactive explainers where you learn an idea by playing with it instead of reading about it.

A large map of physics ideas from Georgia State University. Each topic links to the ideas it builds on, so you can trace anything back to basics.

Type a topic you want to learn and it points you to resources for it. Free.

Interactive explainers and playgrounds on science, technology and math, built so you learn by moving things around.

Interactive games and explainers by Nicky Case on trust, voting, anxiety and how systems behave.

A curated index of free university courses, audiobooks, films, and language lessons published by legitimate institutions.

The free encyclopedia, written by volunteers, in more than 300 languages.

A free math encyclopedia with thousands of entries, from basic geometry to research topics, each with formulas and diagrams.

Spin an interactive globe and click any dot to stream that city's live local radio station, anywhere in the world.

A collection of clever interactive experiments: scale the universe, spend Bill Gates' money, deep-sea dive, and more.

Look out of a stranger's window somewhere in the world, filmed by them, with sound. Click for the next one.

An algorithmically generated map of essentially every music genre Spotify tracks, plotted by sound. Click any genre to hear a sample.

Search a movie or show and see exactly which streaming services carry it (and whether it's rent, buy, or included) in your region.

Turns live Wikipedia edits into sound. Additions, deletions and new users each make a different sound.

Move your mouse and it finds a photo of someone pointing at exactly that spot on the screen.

A Google experiment where you doodle and a neural network tries to guess what it is before you finish. The training data is public.

Look up a TV show or movie and get a scene-by-scene list of exactly which songs played and when.

Walk, drive or fly through cities around the world in real videos, with the local sound.

Send large files as a shareable download link with no account required. The free tier caps the size and the link expires after a few days.

Upload a file, get a shareable link, and the file is automatically deleted after it's downloaded once (or after it expires).

Sends a file of any size straight from your device to someone else's, peer to peer and end-to-end encrypted, with no sign-up. Both of you keep the page open while it transfers.

Layer and mix ambient sounds (rain, ocean, static, etc.) with individual sliders to build a custom background noise for focus or sleep.

Long, DJ-mixed ambient/electronic sets with no vocals, released as free downloadable episodes made for focused coding sessions.

Loops recorded café ambient noise in the background, based on research that moderate ambient sound can boost creative focus.

The original street-view guessing game. Free play is limited and the full version needs a subscription.

A free geo-guessing game with solo and multiplayer modes. Drop into a street view and work out where you are.

Watch a walking-tour video and guess which city it was filmed in. No street view, just the clues in the footage.

Drops you at a random Street View spot somewhere on Earth. Click again to jump somewhere new.

Open-source illustrations you recolour to your brand before downloading. Free for commercial use with no attribution required.

A hand-drawn library where you mix heads, bodies, and poses to build a character. Public domain.

Free stock photos released under Creative Commons Zero, searchable, with no attribution required.

Stock video clips in HD and 4K for backgrounds and projects. Many are free to download, with a paid library as well.

Mix and match illustrated people, swapping pose, clothing, and skin tone, then export the SVG.

Placeholder logos for mockups, so a design does not have to show a real company's mark before the brand exists.

Placeholder images by URL. Put the width and height in the address and it returns a photo at that size.

Free stock video clips, music, sound effects, and video templates to download and use in your own projects.

Free hand-drawn illustrations of people in a loose sketch style. Public domain and editable as SVG.

Free stock photos and videos you can download and use in your projects.

Free photos, illustrations, vector graphics, videos and music you can download and use.

Free illustrations you can recolor and animate in an online editor, then download for slides, sites and apps.

High-quality photos from photographers around the world, free to download and use.

A Photoshop-style image editor that runs entirely in the browser and opens native .psd, .xcf, .sketch, and .xd files.

Google's image compressor. Drag in a photo, compare formats and quality side by side, then export the smallest file that still looks right. Runs locally in your browser.

Upload a photo and it automatically cuts out the background in one click using AI, no manual selection needed.

Enlarges images with AI without the blur of ordinary upscaling. Works best on illustrations and anime art.

Brush over an unwanted person, object, or watermark in a photo and AI fills in the background as if it were never there.

A set of image tools from the Stable Diffusion team, covering background removal, relighting, upscaling, and object cleanup.

Shrinks JPEG photos in the browser so they load faster on the web or fit in an email. Handles several files at once.

A set of free image tools in one place: crop, resize, compress, convert, rotate and add a watermark.

An online photo editor for removing backgrounds and objects, sharpening blurry shots and upscaling.

Cuts the file size of PNG, JPEG and WebP images with smart lossy compression, while they still look the same. Drop files in and download the smaller ones.

An AI image maker known for getting text inside images right, like posters and logos. Has a free plan with limited credits.

AI image and video generation, with a live canvas that updates as you sketch or type. Has a limited free plan.

Generates images from a text prompt on your own GPU. It hides the Stable Diffusion settings, so there is nothing to tune before your first image. Development has been quiet since December 2025.

Makes images from text prompts, with style presets and editing tools. Gives a daily allowance of free credits.

Warren Buffett's yearly letters to Berkshire Hathaway shareholders, free to read back to 1977.

Howard Marks's memos to Oaktree clients on markets, risk and investor behavior, free to read back to 1990.

A volunteer-written wiki on low-cost, long-term index investing, based on the ideas of Vanguard founder John Bogle.

Ben Carlson's blog on markets, market history and personal finance, written for regular investors.

Essays and podcasts from the venture capital firm Andreessen Horowitz on startups, tech and markets.

Research papers from the quant fund AQR on value, momentum and building portfolios.

The bank for central banks. Publishes research and statistics on the global financial system.

Research and commentary on the global economy and markets from Ray Dalio's firm.

Research papers and briefs on investing and markets from the CFA Institute's research foundation, many free to read.

Essays on money and behavior by Morgan Housel and others, the writing behind The Psychology of Money.

Free guides on accounting, financial modeling and valuation. The courses and certificates are paid.

NYU professor Aswath Damodaran's site, with free valuation data, spreadsheets and full course lectures.

The ECB's site, with interest rate decisions for the euro area, statistics and research.

Articles on mental models and better decisions, drawing on thinkers like Charlie Munger.

The US central bank's site, with interest rate decisions, meeting statements and economic research.

The research library of Jeremy Grantham's firm, including his letters on bubbles and long-term returns.

Columbia Business School's value investing center, home of the Graham and Dodd tradition, with talks and resources.

A dictionary and guide for money and investing, with plain explanations of thousands of terms.

The SEC's site for everyday investors, with plain guides to investing basics, fees and spotting fraud.

J.P. Morgan's quarterly chart book on the economy and markets, free to download.

Aswath Damodaran's blog, where he walks through how he values companies and markets as news happens.

Nick Maggiulli's blog on personal finance and investing, backed by data and simple charts.

Ray Dalio's rules for life and work from his book Principles, with free videos and resources.

Michael Batnick's blog on markets and how investors behave.

CNBC's archive of Berkshire Hathaway annual meetings, with full video and transcripts going back to 1994.

A stock screener with a market heat map that shows at a glance which sectors and stocks are up or down. The core screener is free.

The SEC's free database of every US public company filing, including annual reports, quarterly reports and insider trades.

Backtest a mix of stocks, funds or asset classes and see how it would have done over past decades.

Turns the quarterly 13F filings of investment funds into readable tables of holdings and changes.

A library of annual reports from thousands of companies, many going back years.

Tracks stock trades reported by members of the US Congress, searchable by politician, company and date.

Ranks the world's largest companies by market value, with other rankings by revenue, earnings and country.

A backtesting tool built for European investors, using the ETFs and index funds sold in Europe.

Tracks the stock portfolios of well-known value investors from their quarterly SEC filings, with their recent buys and sells.

Look up any US ETF to see what it holds, what it costs and how it compares with similar funds.

Market dashboards, charts and company financials laid out like a professional terminal. Has a free plan.

Long-term charts of stock prices, company financials and economic data, many going back decades.

Fund and stock research with star ratings and analyst reports. Basic data is free; the full analysis needs a subscription.

A searchable feed of insider trades, where executives buy or sell their own company's stock, taken from SEC Form 4 filings.

Company analysis shown as visual charts and a snowflake score for value, growth and dividends. Free use is limited.

Company financials, stock data and ETF details in clean tables. Most of it is free; longer history is paid.

Interactive charts for stocks, crypto and currencies, with drawing tools and indicators. The free plan covers basic charting.

An invite-only community where members post detailed stock pitches. Guests can read the ideas after a delay.

Search hedge fund holdings from 13F filings and see what each fund bought and sold each quarter. Some features are paid.

Live flight tracking by flight number, airport, or map, with delay history and airport status.

The US Geological Survey's live map of recent earthquakes worldwide, with size and depth.

A live map of ships at sea from AIS transponder data. Click any vessel for its name, type, and destination.

A live map of commercial fishing boats around the world, built from ship tracking signals and satellite data.

Watch lightning strikes show up on a world map in real time, from a volunteer detector network.

Live flight tracking in 3D from the window seat. Pick a plane in the sky and see the view from it, with the real time of day, horizon and stars.

The free world map built by volunteers. Anyone can use the data, and it powers many other map apps.

Browse daily satellite images of the whole Earth going back decades. Turn on layers for fires, storms, smoke and sea ice, and scrub through time.

A huge free collection of high-resolution historical maps, searchable by place and date.

Georeferences historical maps from library collections and overlays them on a modern map so you can compare then and now.

Type in a set of coordinates and it gives you links to that exact spot on dozens of maps, satellite views and nearby Wikipedia articles.

Japan's official national map portal with aerial and satellite imagery layers and terrain data. Interface is in Japanese with an English option.

Free, crowdsourced street-level photos from around the world, used to help improve OpenStreetMap.

Interactive maps for popular video games with every collectible, quest, and location marked.

Crowd-sourced street-level photos from around the world, viewable on a map. Covers roads Google never drove.

Search hundreds of thousands of historical maps by place and date, pulled from libraries and archives worldwide.

A world map you can move through time. Pick a year and see the borders, roads and buildings that stood then. Built by volunteers, like OpenStreetMap.

An interactive map of the undersea cables that carry most of the world's internet traffic.

A virtual museum of interactive maps on history, geography and data.

Drag countries around the map to compare their real sizes and see how the usual map stretches them.

Gives every 3 metre square on Earth its own three-word address. Useful for pointing someone to a spot that has no street address.

A satellite map where users outline and describe places, from landmarks down to single buildings. A wiki laid over the map.

Paste a link from YouTube, TikTok, Instagram, X, or similar and download the video or audio file directly, no ads or watermark.

A command line downloader for video and audio from YouTube and around a thousand other sites. It picks the quality, pulls subtitles, and writes the metadata alongside the file.

A horizontal strip of the world's time zones you drag to find a meeting time that works in all of them.

Shows real-time, crowdsourced outage reports for a website or app, so you can tell if it's down for everyone or just you.

A one-click internet speed test built by Netflix. No ads, just your download speed, with upload available on request.

A suite of free browser tools for cutting audio and video, converting formats, and editing PDFs. No signup.

Converts files between more than 200 formats, including audio, video, documents, ebooks, images and spreadsheets, with settings for quality and size. Free for a set number of conversions a day.

Converts files between more than 300 formats: documents, images, audio, video, ebooks and archives. Free for small files.

A live map of aircraft in the sky right now, pulled from ADS-B transponder data. Click any plane for its route, altitude, and speed.

Grades your writing for readability and marks the sentences that are hard to read, along with passive voice and adverbs.

Checks whether a given username is available or already taken across dozens of social platforms and domain extensions at once.

World clock, time zone converter, sunrise and sunset times, moon phases and eclipse dates for any place.

Paste a YouTube link and get the full transcript as plain text you can copy, search, or paste somewhere else.

A social diary for films. Log what you watch, rate it, and browse lists and reviews from other people.

Free ad-supported streaming of films and TV shows, fully licensed and owned by Fox. No subscription, and you can browse without an account.

Describe a film in plain words, even a half-remembered plot, and it tries to name the movie.

Thousands of frames from hundreds of films, sorted by title, for studying composition, color, and lighting.

Streams films and TV shows from the major subscription catalogues in the browser, with no account and no subscription.

Unlicensed streaming mirror of commercial film and television, copyright-infringing. Use your own judgment.

Search a phrase and it plays every film clip where somebody says that line.

Free ad-supported streaming with live channels that run on a schedule plus an on-demand library. Licensed and owned by Paramount.

A searchable library of film stills tagged by shot type, lighting, color, and more. Free tier is limited.

Turns a film into a strip of its average frame colours, one bar per frame, so you can see the palette of a whole movie at once.

Tour museums and zoom into high-resolution artworks and stories from thousands of cultural institutions.

Search the Metropolitan Museum of Art's collection. Hundreds of thousands of public domain images are free to download.

The US national library's online collections: millions of digitized photos, maps, newspapers, recordings and manuscripts.

Search millions of object records from the British Museum, with photos, spanning the whole of human history.

The online collection of the Smithsonian's design museum: objects, drawings, and textiles spanning centuries of design.

Search millions of photos, books and records from libraries, archives and museums across the US in one place.

Search over 30 million items from New Zealand libraries, museums, and archives in one query.

A shared online catalog for museums in Norway and Sweden, with millions of photos and objects to browse.

Digitized art, books, film, and music from thousands of European museums, libraries, and archives.

The home of American Impressionism in Old Lyme, Connecticut, with its art collection browsable online.

The Louvre's online database of its collection, with photos and records for hundreds of thousands of works.

Hundreds of thousands of digitized photos, maps, prints and manuscripts from the New York Public Library, many free to download.

The Rijksmuseum's online collection. Download hundreds of thousands of works in high resolution for free.

Digitized rare books, archives and online exhibitions from the Smithsonian's library system, free to browse.

Millions of images and 3D models from the Smithsonian's collections, released for anyone to download and reuse.

Essays and curated collections of strange and beautiful public domain images, texts and films.

Australia's national digital archive: digitized newspapers, photos, maps, and records searchable in one place.

A free museum and library in London about health and human life, with a large digitized collection of books, images and manuscripts online.

An online encyclopedia of visual art with hundreds of thousands of artworks, sorted by artist, style and period.

Pick a country and a decade on the map and it plays music from that time and place.

An open music encyclopedia run by volunteers. Look up any artist, album or recording to see credits, release versions and links.

A wiki of concert setlists. Look up what any artist played on a given night, going back decades.

A database of past concerts by artist, venue, and date, plus a place to log the shows you have been to.

Ride along on dash-cam footage through cities around the world with local radio stations playing.

Free internet radio built around artist stations. Name a band and it builds a station of similar music, with no subscription.

An interactive family tree of popular music genres, showing how each one grew out of the others.

Type an artist and it draws a web of related artists you can click through, with previews from Spotify.

Snap a photo of a plant or animal and the community and AI help identify it. Your sightings feed real research.

The Global Biodiversity Information Facility: billions of species occurrence records you can map and download.

Scanned natural-history books and journals going back centuries, free to read and download.

Satellite maps of forest loss and fires around the world, with alerts and data by country.

The Smithsonian's ocean site. Articles, photo galleries and explainers on sea life, ocean science and conservation.

Another browser-based PDF toolkit covering merge, split, compress, and PDF-to-Word/JPG conversion, free with limits.

A browser-based PDF toolkit that can compress, convert, merge, split, and e-sign. Free with a daily usage limit.

A directory of direct account-deletion links for hundreds of sites, color-coded by how easy or hard each one makes it to leave.

Encrypted email from a Swiss company, with a free tier covering one address and limited storage. Mail between Proton users is end-to-end encrypted.

Generates a disposable inbox instantly so you can receive a signup or verification email without giving out your real address.

A disposable email inbox that self-destructs after 10 minutes (extendable), for one-off signups you don't want tied to your real address.

A directory of direct account-deletion links and step-by-step instructions for hundreds of websites and apps.

Write a note and get a one-time link. The note is destroyed the moment the recipient reads it, so it cannot be reread or forwarded.

A notes app that keeps everything as plain Markdown files on your own disk, linked together into a graph you can navigate. Free for personal use, no account required.

A free, open-source office suite with a word processor, spreadsheet, and presentation app that opens and saves Microsoft Office files. Runs on Windows, Mac, and Linux.

Notes, documents, and databases in one workspace. Your files stay on your own machine, and the whole app is AGPL licensed.

Type a topic or paste notes and it builds a slide deck, document or simple web page you can then edit. New accounts get free credits.

Small AI helpers for when a job feels too big. Magic ToDo breaks a task into steps, and others change the tone of a message, guess how long something will take, or turn a brain dump into a list.

Free presentation software in the browser from Google. Needs a Google account, and a team can edit the same deck at once.

Save links into folders with tags, full-text search, and a preview image for each one. The free tier syncs across browsers and phones.

Records you doing a task on screen and turns each click into a step-by-step guide with screenshots you can share.

Paste your text and it builds a slide deck inside Google Slides, with layouts and images added. The free plan makes 12 decks a year.

Captures a workflow as you click through it and turns it into a how-to guide with screenshots. Does the same job as Scribe.

A collection of thinking tools and frameworks for solving problems, making decisions, and understanding systems, each explained in plain language.

A free academic search engine that indexes millions of papers with citation graphs and AI-generated TL;DR summaries for each.

Free research papers in physics, math, computer science and more, often posted before they are formally published.

Finds free, legally hosted open-access copies of paywalled research papers. The legitimate counterpart to Sci-Hub, mostly used as a browser extension.

Enter one academic paper and it draws a visual graph of related papers based on shared citations, for exploring a literature.

Search millions of open-access research papers gathered from university and journal repositories, all free to read.

A curated index of peer-reviewed, open-access academic journals across every subject. Search whole journals, not just single papers.

A large library of academic journals, books and primary sources. Full access usually comes through a school or library. A free personal account can read a limited number of articles online.

Free science reporting on math, physics, biology and computer science, written for curious readers rather than experts.

Paste a paper's DOI or URL and it retrieves a free copy of the paywalled journal article.

Paywall-bypass mirror, copyright-infringing. Use your own judgment.

Science news from universities and research institutes, updated throughout the day.

Booking pages that read your calendar and offer only the slots you are really free. The self-hosted version is called Cal.diy.

Upload an image or paste its URL and it searches the web for every other place that exact image has appeared.

Enter an email or phone number and it checks that against known data-breach dumps to tell you which breaches exposed it.

A password manager with apps on every platform and unlimited passwords on the free plan. The server is AGPL licensed apart from its enterprise directory.

Upload a file or paste a URL and it's scanned against 70+ antivirus engines and blocklists at once, run by Google.

Tracks an Amazon product's price history over time and can email you the moment it drops to a price you set.

Search any paid app or service and get a crowdsourced list of free/open-source alternatives, filterable by platform.

Finds open-source replacements for proprietary software, listing the licence and whether it can be self-hosted.

A directory of AI tools sorted by what they do, with filters for free, freemium, and open source.

A curated directory of AI tools, grouped by category, for finding one that fits a project.

A free directory of AI tools and software, updated daily.

Turns your browser's new-tab page into a living portfolio and lists you in a directory brands can browse to find creators.

Enter any website and it suggests other sites like it, based on shared traffic and content. A discovery tool for whole sites, not just apps.

A searchable directory of thousands of AI tools, organized by category, for finding one that fits a specific task.

A large, searchable directory of AI tools sorted by the task they do. Type what you want done and it lists the tools that do it.

A planetarium in the browser. See the night sky from any place and time, with stars, planets and constellations labeled.

NASA's 3D apps that run in the browser. Fly alongside real spacecraft, planets and asteroids placed where NASA's data says they are.

NASA's Astronomy Picture of the Day, running since 1995, each with a short explanation by an astronomer.

Set your location and it tells you when the International Space Station and other satellites pass overhead. Also has star charts.

A calendar of what you can see in the night sky from where you live: planets, meteor showers, eclipses and comets, with sky charts.

NASA's hub for planets outside our solar system, with a running count of confirmed finds and a catalog you can browse.

Search NASA's free archive of images, videos and audio from its missions and research.

NASA's guide to the planets, moons, dwarf planets and comets of our solar system, with facts, images and mission news.

A 3D universe you can fly through, from nearby planets to far galaxies, built on real star catalogs. A paid Windows app, sold on Steam.

A daily news page on the Sun and near-Earth space: solar flares, aurora forecasts, sunspots and asteroid flybys.

Zoom from the smallest known particles out to the whole observable universe, with a note on each object.

A machine translator that's widely considered more natural-sounding than Google Translate for its supported languages, with a desktop app and writing assistant.

A set of browser AI tools in one place: watermark and sticker removal, image upscaling, subtitles, video translation and text to speech. The free plan gives 5 credits a day, enough for one or two jobs.

An ad-supported bundle of single-purpose tools under one site: PDF conversion, image upscaling, watermark removal, and grammar checking.

Edit video and podcasts by editing the transcript. Delete a word from the text and it cuts it from the recording. Has a free plan.

AI video generation and editing. Make clips from text or images, or change existing footage with AI tools. New accounts get a small batch of free credits.

Upload a video and it removes the background frame by frame, like Remove.bg but for video. No green screen needed.

Removes or swaps a video's background without a green screen, directly in Canva's browser-based editor.

Meta's free mobile video editor made for Instagram creators, with timeline editing, captions and effects.

Turns a script or blog post into a video with AI voiceover and stock footage. Has a limited free plan.

Makes videos with AI avatars that speak your script, and can translate a video into other languages in the speaker's own voice. Has a limited free plan.

Makes AI video from text or images through its Dream Machine app.

Makes short AI video clips from text or images, with effects that add or swap objects in a scene.

Upload a video and it turns the speech into subtitles you can edit, translate and export.

Makes videos with AI avatars and AI voices from a script, so you can get a talking presenter without filming. Free to start, with paid plans for more.

Animated forecast maps of wind, rain, temperature and waves, with several forecast models to compare.

An animated globe of live wind, ocean current, and weather patterns you can spin, zoom, and step through in time.

Near-live satellite images of the whole Earth, with storm tracking, rain radar and wildfire layers.

The Smithsonian's database of volcanoes that have erupted in the last 10,000 years, with eruption histories and weekly activity reports.

NASA's climate science hub, with plain explainers and charts of global temperature, sea level, ice and carbon dioxide.

Weather forecasts drawn as flowing animated maps of wind, rain, temperature, and cloud cover across the planet.

Website analytics that uses no cookies and collects no personal data. Host it yourself for free, or pay for their hosted version.

A digital library that hosts the Wayback Machine (archived snapshots of old webpages) plus free public-domain books, audio, and software.

Creates a permanent, timestamped copy of any webpage at the URL you give it. Useful when the original might be edited or taken down.

A free, open archive of petabytes of crawled web pages, meant for researchers and developers rather than casual browsing.

Hit one button and it sends you to a random, hand-picked interesting website. A StumbleUpon-style way to wander the web.

A search engine that only indexes small, old-style, hand-made pages. No corporate sites, no SEO farms, just the classic web.

Click the button and land on a pointless, single-purpose website. Click again for the next one.

A catalog of strange and wonderful places around the world, written up by editors and readers.

A directory of web tools picked by people, not an algorithm. Each entry has a short note on why it made the list.

A collection of weird, funny, and oddly useful websites, one random pick at a time.

A curated feed of unusual and useful websites, sorted by topic, with a random button for browsing.