> Ranked entirely by community upvotes. No editorial bias.
> Top 50 Geek Sites + Top 50 AI Tools = your Community Top 100.
> [Login] to cast your votes!
> The world's largest platform for code hosting, version control, and open-source collaboration. If you code, you live here.
> Community-driven Q&A for programmers. Quick and easy answers to any type of coding question you may have.
> A must for any geek interested in HTML coding. Focuses on HTML, CSS and Javascript but also covers SQL, PHP, JQuery, Java and Python.
> Over 1800 hours of free coding classes. From responsive websites to database design and security implementation. Great for beginner to intermediate coders.
> Programming editor with over 4 dozen languages, programming challenges, lessons and a coding forum.
> Coding challenges in 10 languages including Python, Ruby, C#, Java, Javascript, Swift, PHP, Go, C++ and C. Plus classes and interview prep.
> For advanced coders who want to test their skills and potentially make some money. Great if you know lots of languages and can fix bugs easily.
> Online IDE with collaborative coding, AI assistance, and instant deployments. Code in 50+ languages right from your browser.
> Practice ethical hacking and penetration testing in a legal, gamified environment. Great for aspiring cybersecurity professionals.
> Coding challenges and interview prep used by millions of developers. The go-to site for grinding algorithm problems before tech interviews.
> Test Python code without downloading an application. You can also easily download Python right to your Mac, PC or Linux box from the same link.
> Tutorials for computer hobbyists and IT pros. Everything from hardware and software to networking and servers.
> One of the best how-to resources on the web. Around 20 categories with a great visual format for visual learners.
> Learn how to make things - from technologies to crafts. Even tutorials on how to make cosplay costumes.
> General life tips from how to make a quick buck to how to train your own neural network. Making life a little bit easier.
> Great DIY section for technocrats. One of the coolest resources for building the latest tech toys or starting an interesting tech project.
> Free repair guides for everything from iPhones to tractors. The right to repair starts here.
> Massive library of free 3D printing models. Download, remix, and print everything from phone stands to cosplay armor.
> Hardware hacking, electronics projects, and maker culture. If you've ever soldered something you shouldn't have, this is your people.
> Tiny, affordable computers for learning and making. The gateway drug to hardware hacking and DIY electronics projects.
> Perhaps the best resource for the most creative and out-of-the-box video lectures on the web. Almost any topic from economics to religion to predicting the future.
> Listen to lectures while someone draws on a virtual blackboard. Free education that has grown massively from Salman Khan's original videos.
> Excellent resource for grasping unfamiliar topics. In 20 minutes you'll be able to converse with anyone on whatever topic you look into.
> Like YouTube for geeks. Funny videos, out-of-the-box ideas, and philosophical content. Articles too, but the best content is in the videos.
> Well-done classes where you can learn a lot in a short time. Programming, website building, guitar - a growing library of quality content.
> Take Stanford classes for free. Courses in biosciences, business, medicine, sciences, math, law, engineering, computer science and more.
> Free lecture notes, exams, and videos from MIT. Reddit's most recommended free university resource by a mile.
> Math visualizations that make linear algebra, calculus, and neural networks click. Grant Sanderson is a Reddit legend.
> Everything for math geeks. Every obscure thing that ever perplexed you about math is explained simply and clearly.
> For anyone with even a passing interest in astrophysics or the nature of time. Will send your mind into outer space.
> Like Cliff's Notes in video form. Learn about a topic quickly with great animation and entertaining hosts like John Green.
> Some of the best lectures available online. The sheer amount covers almost every topic you can think of and then some.
> Interactive lessons in math, science, and computer science. Learn by solving puzzles, not watching lectures. Addictive in the best way.
> Learn 24 different languages for free. For aspiring polyglots and language geeks.
> Learn about other countries, their leaders, intelligence-related topics and a myriad of other things. One of the best government websites.
> Randall Munroe's webcomic of romance, sarcasm, math, and language. Hover over the comics for the hidden alt-text jokes. A nerd rite of passage.
> Space news, mission updates, and stunning imagery from the final frontier. Live streams of launches and the ISS.
> Research and data to make progress against the world's largest problems. Beautiful charts on everything from poverty to energy.
> One of the most reliable sites for reviewing credit cards, loans, savings accounts, brokers and more. Free credit score too.
> Get a lot of stock data quickly. Mock portfolios, stock screening, and premium backtesting tools for investing geeks.
> Joel Greenblatt's stock screening tool based on his book. The formula has beaten the market consistently.
> Free backtesting and analytics tools. Factor analysis, timing models, and fund discovery for serious investors.
> The Wikipedia of finance. Clear explanations of every investing and economics concept you'll ever encounter.
> Budgeting software that actually works. Give every dollar a job and stop wondering where your money went.
> The investing community built around Jack Bogle's index fund philosophy. Reddit's go-to resource for no-nonsense, low-cost investing advice.
> Income percentile calculators, S&P 500 return tools, and net worth by age data. The geekiest personal finance site on Reddit.
> Stunning infographics and data visualizations about money, markets, and the global economy. The prettiest way to understand finance.
> Advanced charting platform and social network for traders. Real-time data, stock screeners, and a massive community sharing ideas.
> The godfather of the FIRE movement. Retire early through badassity, frugality, and index funds. A Reddit cult classic.
> Ray Dalio explains economics simply in 30 minutes. Worth watching multiple times for the concepts to fully sink in.
> OpenAI's conversational AI. Ask it anything, generate code, write emails, brainstorm ideas - the Swiss Army knife of AI tools.
> Anthropic's AI assistant known for nuance, safety, and handling long documents. Competes head-to-head with ChatGPT on reasoning and coding tasks.
> Google's multimodal AI that can reason across text, images, audio, and video. Deeply integrated with Google Workspace and Search.
> AI assistant baked into Windows, Edge, and Office 365. Powered by OpenAI models with access to web search and your Microsoft data.
> AI-powered search engine that gives you sourced answers instead of a list of links. Like having a research assistant.
> The gold standard for AI art generation. Known for stunning, painterly aesthetics that dominate social media and creative projects.
> AI pair programmer that suggests code as you type. Works in VS Code, JetBrains, and Neovim. The coding assistant that started it all.
> The company behind ChatGPT, DALL-E, and GPT-4. Research blog, API docs, and the latest model announcements live here.
> The GitHub of AI. Open-source models, datasets, and tools for machine learning. Where the AI community builds together.
> AI-first code editor built on VS Code. Chat with your codebase, generate code from natural language, and refactor with AI assistance.
> AI voice cloning and text-to-speech that sounds eerily human. Used for audiobooks, dubbing, and content creation.
> Run large language models locally on your machine. No cloud, no API keys - just download and chat with Llama, Mistral, and more.
> The company behind Stable Diffusion, the most popular open-source image generation model. Powers thousands of AI art apps.
> The AI safety company behind Claude. Founded by former OpenAI researchers, focused on building reliable and interpretable AI systems.
> European AI lab building powerful open-weight models. Their Mixtral and Mistral models rival GPT-4 while being more accessible to developers.
> Computational knowledge engine that answers factual questions with data and calculations. Math, science, and everything in between.
> Generate full songs with vocals from a text prompt. AI music creation that actually sounds like real music.
> Quora's platform for chatting with multiple AI models - GPT-4, Claude, Gemini, and more - all in one place. Great for comparing responses.
> AI-powered creative tools for video, image, and audio generation. Hollywood-quality effects from your browser.
> Google's AI notebook that lets you upload documents and chat with them. Generates podcast-style audio summaries of your content.
> AI video generation that turns text or images into short videos. Simple interface, impressive results for quick video content.
> AI-powered 3D capture and video generation. Turn photos into 3D models or generate videos from text descriptions.
> AI image generation with fine-tuned models, real-time canvas, and advanced editing tools. Great for game assets and concept art.
> AI image generator that actually gets text right. If you need legible words in your AI art, this is the one to use.
> xAI's chatbot with real-time access to X (Twitter) posts. Known for its unfiltered personality and willingness to answer spicy questions.
> Create and chat with AI characters - fictional, historical, or custom. The most popular AI roleplay platform with millions of users.
> Google's AI research lab behind AlphaGo, AlphaFold, and Gemini. Publishes groundbreaking papers on protein folding to game-playing AI.
> Browse state-of-the-art AI research papers linked directly to their code implementations. Essential for ML researchers.
> The world's largest data science community. Competitions, datasets, notebooks, and courses for machine learning practitioners.
> Run open-source ML models in the cloud via API. Easy access to thousands of models without managing GPU infrastructure.
> Platform for running open-source AI models at scale. Fast inference API for Llama, Mistral, and other popular models.
> Desktop app for running local LLMs with a clean chat UI. Supports GGUF models and it is completely free.
> Free AI code completion for 70+ languages. Works in most IDEs and is competitive with GitHub Copilot without the subscription.
> AI code assistant that runs locally or in the cloud. Supports 30+ languages with privacy-focused, on-premise deployment options.
> Describe a UI in plain English and get production-ready React code. Generates full components with Tailwind CSS styling.
> AI-powered full-stack development environment. Describe what you want to build and watch it create a working app in your browser.
> AI-powered search engine built for developers. Get code answers with sources instead of endless Stack Overflow tabs.
> Curated directory of AI tools updated daily. Find the right AI tool for any task from thousands of options.
> The largest AI tool directory on the web. Search thousands of AI tools by task, updated daily with new launches.
> AI-powered search engine that lets you choose your AI model and get sourced answers alongside traditional web results.
> AI research assistant that finds relevant papers, extracts key claims, and helps you synthesize academic literature.
> AI-powered academic search that reads research papers and gives you evidence-based answers with citations.
> AI music generator competing with Suno. Create songs in any genre with realistic vocals, instruments, and production quality.
> Community hub for Stable Diffusion models, LoRAs, and embeddings. Browse, share, and download custom AI art models.
> AI writing platform for marketing teams. Generate blog posts, social media copy, and ad content at scale.
> AI copywriting tool for sales and marketing. Generate email sequences, product descriptions, and social posts in seconds.
> AI-powered writing assistant that goes beyond grammar. Tone detection, rewrites, and generative AI for emails and documents.
> AI meeting transcription and note-taking. Automatically records, transcribes, and summarizes your meetings in real time.
> AI-powered background removal that works instantly. Upload a photo and get a clean cutout in seconds.
> AI-powered presentations. Describe your topic and get a full slide deck with content, images, and formatting.