What is… every popular GitHub repo?
Popular GitHub repositories, each answered in plain English for non-coders: what it is, its tech stack, and how to run it. Pick any to read the answer.
By language: Python · TypeScript · JavaScript · Go · C++ · Rust · Java · HTML · C · Shell · C# · Swift · Jupyter Notebook · PHP · Ruby · Kotlin
- morganamilo/paruParu is a command-line tool for Arch Linux that automates searching, reviewing, and installing packages from t
- reacherhq/check-if-email-existsA self-hosted tool that checks whether an email address is real and deliverable — without sending a test email
- spring-projects/spring-aiSpring AI is a Java framework that connects Spring Boot applications to AI models from OpenAI, Anthropic, Goog
- mark3labs/mcp-goA Go library for building MCP servers — programs that let AI assistants like Claude call custom tools, read da
- rsuite/rsuiteReact Suite is a library of ready-to-use UI components for React — buttons, tables, date pickers, modals, and
- jstherightway/js-the-right-wayThe source code for jstherightway.org, a community-maintained reference site that collects JavaScript best pra
- sebastianstarke/ai4animationA multi-year research project from the University of Edinburgh that uses neural networks trained on motion cap
- mortennn/dozerSmall free Mac app that hides cluttered menu bar icons behind a dot, letting you show or hide them with a sing
- adrai/flowchart.jsJavaScript library that turns a short plain-text script into a clean SVG flowchart diagram in the browser — no
- ejci/favico.jsJavaScript library that adds notification badges, custom images, or live video to your browser tab's tiny favi
- pwr-solaar/solaarLinux desktop app for managing Logitech wireless and wired input devices — pair, configure, remap buttons, and
- aws/aws-sdk-goThe original AWS SDK for Go (v1) that lets Go programs call AWS services like S3 and DynamoDB — reached end-of
- jivoi/awesome-ml-for-cybersecurityCurated list of datasets, research papers, books, talks, and courses at the intersection of machine learning a
- jquense/react-big-calendarReact component that displays a list of events in monthly, weekly, and daily calendar views styled like Google
- qiao/pathfinding.jsJavaScript library with 11 pathfinding algorithms — including A*, Dijkstra, and Jump Point Search — for naviga
- apple/ml-ferretApple research AI model that can accept a drawn region in an image as input and return answers that refer back
- applenob/cpp_primer_practiceStudy notes and exercise answers for all 19 chapters of C++ Primer (5th edition), written in Chinese — a compa
- foundationvision/varVAR is a 2024 NeurIPS Best Paper AI image generation project that builds images coarse-to-fine across scales u
- brave-people/dev-eventDev-Event is a community-maintained calendar of developer events in South Korea, listing upcoming conferences,
- primer/octiconsOcticons is GitHub's official SVG icon library, with packages for JavaScript, React, Ruby, Rails, and Jekyll s
- angular/protractorProtractor is an end-to-end testing framework for Angular and AngularJS apps that drives a real browser to cli
- prosemirror/prosemirrorProseMirror is a JavaScript toolkit for building rich text editors with real-time collaborative editing and cu
- sxei/chrome-plugin-demoA comprehensive Chinese-language guide and fully working demo for building Chrome extensions, covering manifes
- vowpalwabbit/vowpal_wabbitVowpal Wabbit is a fast online machine learning library that trains models one example at a time without loadi
- miekg/dnsA full-featured Go library for building DNS clients, servers, and tools at a low level, supporting DNSSEC, DNS
- tencent/libcolibco is Tencent's C/C++ coroutine library powering WeChat's backend since 2013, letting servers handle millio
- react-cosmos/react-cosmosReact Cosmos is a development sandbox for building and testing individual React UI components in isolation, ma
- builderio/builderBuilder.io is a visual drag-and-drop platform that lets designers and content editors update web pages using y
- nickersoft/push.jsA small JavaScript library that lets websites show desktop notification popups in any browser without writing
- hardikvasa/google-images-downloadA Python command-line script that searches Google Images for a keyword and downloads matching photos to a loca
- gotwarlost/istanbulAn archived JavaScript code coverage tool that tracked which lines, branches, and functions your tests actuall
- redpanda-data/connectA data pipeline tool that moves and transforms messages between systems like Kafka, AWS, and databases using a
- ccxt/binance-trade-botAn automated trading bot for Binance that watches cryptocurrency price ratios and makes trades on your behalf
- ethers-io/ethers.jsA JavaScript library that lets developers connect to the Ethereum blockchain, manage crypto wallets, send tran
- jofpin/trapeA Python security research tool that demonstrates how websites silently track a visitor's location, active log
- openstatushq/openstatusAn open-source uptime monitoring and public status page platform that checks your services from 28 global regi
- kaminari/kaminariA Ruby gem that adds pagination to Rails apps with a single method call, splitting large database result sets
- mandiant/flare-vmA PowerShell script that automatically installs a complete set of reverse engineering and malware analysis too
- elder-frog/opencoursecatalogA curated directory of MIT, Stanford, and Harvard open courses mirrored to Bilibili for viewers in mainland Ch
- any86/any-ruleA VS Code extension (and web app) bundling 84 pre-tested regular expressions for common formats like phone num
- x-plug/mobileagentAn Alibaba research project that builds AI agents capable of controlling Android phones, Windows, macOS, and b
- github/copilot-sdkAn official GitHub SDK that lets you embed Copilot's AI agent — planning, tool use, and file editing — directl
- amitshekhariitbhu/android-debug-databaseA one-line Android library that starts a local web server in debug builds so you can view, query, and edit you
- crmeb/crmebAn open-source PHP and Vue e-commerce platform that runs a WeChat Mini Program, mobile web, PC, and native app
- secwiki/windows-kernel-exploitsA community-maintained reference list of proof-of-concept exploit code for Windows kernel privilege escalation
- microsoft/typechatA Microsoft open-source library that lets you add plain-English input to any app by defining TypeScript types
- chrisbanes/android-pulltorefreshAn archived Android library that added pull-to-refresh gesture support to lists, grids, web views, and scroll
- prevwong/craft.jsCraft.js is a React framework for building custom drag-and-drop page editors, providing the drag-and-drop syst
- yonggekkk/sing-box-ygA shell script collection that installs and configures five proxy protocols at once on a Linux VPS with a sing
- apiaryio/api-blueprintA plain-text format for describing web APIs before writing any code, giving developers, PMs, and designers a s
- ibanimatable/ibanimatableA Swift library for iOS that lets you add animations, transitions, and visual effects to apps by clicking thro
- angr/angrA Python framework for analyzing compiled programs without source code, using symbolic execution to automatica
- getsentry/sentry-javascriptThe official JavaScript SDKs for Sentry error tracking — install one package for your platform (React, Node.js
- kickstarter/ios-ossThe full open-source code for the official Kickstarter iPhone and iPad app, published as an educational resour
- openshift/originThe conformance test suite for OpenShift, Red Hat's enterprise Kubernetes platform — compiles into a single bi
- ybq/android-spinkitA small Android library that adds 12 animated loading spinner styles — bouncing dots, folding cubes, wave patt
- fudan-generative-vision/halloA research AI tool that takes a still portrait photo and an audio clip and generates a short video of that fac
- bentoml/bentomlA Python library that turns AI and machine learning models into web APIs and Docker containers with a few doze
- yogeshojha/rengineA web-based reconnaissance tool for penetration testers that automates subdomain discovery, port scanning, and
- porsager/postgresA fast JavaScript library for querying PostgreSQL from Node.js, Deno, Bun, or Cloudflare Workers using templat
- shellphish/how2heapA collection of C programs demonstrating real heap memory exploitation techniques used in security research an
- slavingia/skillsA Claude Code plugin that adds ten slash commands based on The Minimalist Entrepreneur book, guiding founders
- testcontainers/testcontainers-javaA Java library that spins up real databases, browsers, and other services inside Docker containers during auto
- mitdeeplearning/introtodeeplearningThe official hands-on lab notebooks for MIT's Introduction to Deep Learning course, covering computer vision,
- daltoniam/starscreamA Swift library for iOS and macOS that handles WebSocket connections with a few lines of code, letting your ap
- open-circle/valibotA tiny TypeScript library for validating data at runtime that can be up to 95% smaller in a production bundle
- symfony/http-foundationA PHP library that wraps HTTP requests and responses into clean objects, replacing PHP's scattered global vari
- react-native-image-picker/react-native-image-pickerA React Native module that opens the phone's native camera or photo gallery from JavaScript, letting users cap
- shwenzhang/andresguardAn Android Gradle plugin from the WeChat team that shrinks APK file sizes by renaming resource files to very s
- microsoft/ufoUFO is a Microsoft AI research project that lets software agents control Windows apps visually by reading the
- dicebear/dicebearDiceBear is a library and API for automatically generating unique avatar images for users. Give it a username
- seleniumhq/docker-seleniumPre-packaged Docker images for running Selenium Grid—the browser automation tool—in containers. Run automated
- aeron-io/aeronAeron is a high-performance messaging library for sending data between programs with ultra-low latency. It sup
- pdfcpu/pdfcpupdfcpu is a Go library and command-line tool for working with PDF files. It can merge, split, encrypt, waterma
- ewenwan/mvisionMVision is a Chinese-language study guide covering machine vision and robotics. It collects tutorials, code li
- bayesian-optimization/bayesianoptimizationA Python library for finding the best input settings for a slow or expensive function without brute-force sear
- igorbarinov/awesome-data-engineeringA curated reference list of tools and technologies used in data engineering, covering databases, data ingestio
- kognise/water.cssWater.css is a tiny stylesheet you add to any HTML page in one line to make it look clean and readable instant
- kenshin/simpreadSimpRead is a browser extension that converts any webpage into a clean, distraction-free reading view with one
- aimeos/aimeos-laravelFull-featured online shop package that plugs into any Laravel application in about five minutes, covering prod
- flutterchina/flutter-in-actionFlutter in Action is a free open-source Chinese-language e-book teaching Flutter cross-platform app developmen
- jonobr1/two.jsJavaScript library for drawing 2D shapes and animations in the browser using one set of instructions that work
- react-toolbox/react-toolboxLibrary of ready-made React components styled after Google's Material Design, with buttons, dialogs, date pick
- hypothesisworks/hypothesisPython testing library that automatically generates hundreds of random inputs to find edge-case bugs your hand
- pdm-project/pdmCommand-line tool for managing Python project dependencies using the standard pyproject.toml file, like Poetry
- johnserf-seed/tiktokdownloadPython command-line tool for bulk-downloading TikTok and DouYin videos, images, and audio without watermarks,
- sitoi/dailycheckinPython script that automatically performs daily check-ins on dozens of Chinese platforms — video sites, cloud
- wgh136/picacomicDeprecated Flutter comic reading app for Android and iOS supporting six sources including picacg, e-hentai, an
- v2fly/domain-list-communityCommunity-maintained lists of domain names grouped by category — ads, streaming, Chinese sites — that proxy to
- firezone/firezoneA self-hosted VPN server and firewall your team runs on your own servers, giving you control over who can acce
- rednote-hilab/dots.ocrOpen-weight AI model from Xiaohongshu that parses documents, PDFs, and images into structured text, tables, an
- xitanggg/open-resumeA free, browser-based tool for building a clean resume PDF and checking whether your existing resume can be pr
- linuxkit/linuxkitA toolkit for building custom, minimal Linux operating systems from a YAML recipe, producing a single immutabl
- kellyjonbrazil/jcA command-line tool and Python library that converts the plain-text output of over a hundred Unix commands int
- ml-explore/mlx-examplesA collection of ready-to-run AI and machine learning example scripts for Apple Silicon Macs, covering language
- cloudnative-pg/cloudnative-pgA Kubernetes operator that automates running production-grade PostgreSQL databases in your cluster, handling r
- mrnerf/awesome-3d-gaussian-splattingA curated directory of research papers, open-source tools, viewers, and tutorials about 3D Gaussian Splatting
- wuxingsanren/wildcat-vip-accountA Chinese project that collects free shared VIP account credentials and Tampermonkey browser scripts for acces
- uz-slamlab/orb_slam3A C++ library for real-time camera tracking and 3D map building using only a camera or a camera plus motion se
- openclaw/clawhubA public registry where developers publish and discover skills for the OpenClaw AI agent platform, with a CLI
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