Open source, indexed and understood.

Milligram is an ultra-lightweight (~2kb gzipped) CSS framework that provides minimal default styling for typography, forms, buttons, grids, and tables. It aims to be a clean, low-opinion starting point rather than a full UI component library.

community-skeleton is an open-source CSS project in the agent frameworks space with 19k GitHub stars. The repository has seen commits within the last year.

Mobile-Security-Framework-MobSF is an open-source JavaScript project with 21.2k GitHub stars. It is associated with android-security, api-testing, apk, cwe. The repository is actively maintained, with recent commits.

ECC is an open-source JavaScript project in the claude space with 210k GitHub stars. The repository is actively maintained, with recent commits.

hermes-agent is an open-source Python project in the agent frameworks space with 185.8k GitHub stars. The repository is actively maintained, with recent commits.

claw-code is an open-source Rust project in the agent frameworks space with 193.4k GitHub stars. The repository is actively maintained, with recent commits.

AutoGPT is a platform for building, deploying, and running continuous AI agents that automate multi-step workflows. It pairs a low-code visual agent builder (connecting "blocks" into workflows) with a server runtime, marketplace of pre-built agents, and the original standalone AutoGPT Agent plus the Forge toolkit and agbenchmark.

prompts.chat is a large, community-curated collection of ready-to-use prompt examples for AI chat models (originally ChatGPT), packaged as a browsable site, downloadable datasets, a self-hostable prompt library, and integrations like a CLI, Claude Code plugin, and MCP server.

skills is an open-source Shell project in the claude space with 120.3k GitHub stars. The repository is actively maintained, with recent commits.

bun is an open-source Rust project in the testing space with 93.1k GitHub stars. The repository is actively maintained, with recent commits.

Playwright is a cross-browser automation and end-to-end testing framework that drives Chromium, Firefox, and WebKit through a single API. It pairs a full-featured test runner (auto-waiting, resilient locators, tracing, parallel isolated contexts) with a browser-automation library, plus CLI and MCP integrations for AI agents.

hoppscotch is an open-source TypeScript project with 79.5k GitHub stars. It is associated with api, api-client, api-rest, api-testing. The repository is actively maintained, with recent commits.

imgui is an open-source C++ project with 73.8k GitHub stars. It is associated with api, cplusplus, framework, game-development. The repository is actively maintained, with recent commits.

Front-end-Developer-Interview-Questions is an open-source Nunjucks project with 60.9k GitHub stars. It is associated with css-questions, front-end, html-questions, interview-questions. The repository is actively maintained, with recent commits.

etcd is an open-source Go project with 51.8k GitHub stars. It is associated with cncf, consensus, database, distributed-database. The repository is actively maintained, with recent commits.

Vue 2 is the now end-of-life version of the progressive JavaScript framework for building user interfaces, centered on a reactive, component-based view layer with an incrementally adoptable design. This repository is archived in favor of Vue 3 (vuejs/core).

andrej-karpathy-skills is an open-source project in the frameworks space with 170.3k GitHub stars. The repository is actively maintained, with recent commits.

Next.js is a React framework from Vercel that adds production-grade infrastructure on top of React — file-based routing, server-side rendering, static generation, server components, API routes, and an integrated build/bundling pipeline. It aims to be the default full-stack toolkit for building React applications.

React Native is a framework for building native iOS and Android apps using React and JavaScript, rendering real native UI controls rather than web views. It lets developers share a single codebase across platforms with fast iteration via live reload.

immich is an open-source TypeScript project in the frameworks space with 103.1k GitHub stars. The repository is actively maintained, with recent commits.

FastAPI is a high-performance Python web framework for building APIs that leverages standard type hints, Starlette for the web layer, and Pydantic for data validation. It automatically generates OpenAPI-based interactive docs and provides editor autocompletion and request/response validation from type annotations.

Bootstrap is a CSS-first front-end framework that bundles a responsive grid, prebuilt UI components, and utility classes, plus a small set of JavaScript widgets (built on Popper), letting developers assemble styled, mobile-friendly interfaces without writing CSS from scratch.

ui is an open-source TypeScript project in the ui components space with 116.3k GitHub stars. The repository is actively maintained, with recent commits.

ui-ux-pro-max-skill is an open-source Python project in the ui components space with 88.5k GitHub stars. The repository has seen commits within the last year.

Material UI is a comprehensive React component library implementing Google's Material Design, providing a large set of ready-made, customizable, accessible UI components and a powerful theming/styling system.

Tailwind CSS is a utility-first CSS framework that lets you build custom designs directly in your markup by composing low-level utility classes instead of writing custom CSS. It generates only the styles you use via a build step, keeping output small.

Storybook is a frontend workshop for developing, testing, and documenting UI components in isolation. It renders components outside your app in a dedicated browser environment and supports React, Vue, Angular, Svelte, Web Components, and many other frameworks through a pluggable addon ecosystem.

An organized, open-source collection of system design learning resources and interview prep, covering scalability concepts (caching, load balancing, databases, CAP theorem) with sample solutions, diagrams, and Anki flashcards. It's a curated study guide rather than a code library.

django is an open-source Python project in the databases & orm space with 87.8k GitHub stars. The repository is actively maintained, with recent commits.

redis is an open-source C project with 74.8k GitHub stars. It is associated with cache, caching, database, distributed-systems. The repository is actively maintained, with recent commits.

strapi is an open-source TypeScript project with 72.3k GitHub stars. It is associated with api, cms, cms-framework, content-management. The repository is actively maintained, with recent commits.

30-Days-Of-Python is an open-source Python project with 64.6k GitHub stars. It is associated with 30-days-of-python, data, data-science, database. The repository has seen commits within the last year.

prometheus is an open-source Go project with 64.5k GitHub stars. It is associated with alerting, graphing, hacktoberfest, metrics. The repository is actively maintained, with recent commits.

webpack is an open-source JavaScript project in the build tools space with 65.8k GitHub stars. The repository is actively maintained, with recent commits.

Parcel is a zero-configuration web application bundler that automatically detects and transforms assets (JS, CSS, HTML, images, and more) out of the box, using a multicore architecture and persistent caching for fast builds.

esbuild is a high-performance JavaScript/TypeScript/CSS bundler and minifier written in Go, designed to be 10-100x faster than traditional web build tools. It offers a unified CLI, JS, and Go API with built-in support for ESM/CommonJS, JSX, tree shaking, source maps, and plugins.

PostCSS is a tool for transforming CSS with JavaScript plugins. It parses CSS into an abstract syntax tree, lets plugins inspect and mutate it, then stringifies the result — powering everything from autoprefixing to future-syntax polyfills and minification.

Rollup is a JavaScript module bundler that compiles ES modules into optimized output across multiple formats (ESM, CommonJS, UMD, IIFE), with aggressive tree-shaking to eliminate unused code. It's widely used for bundling libraries and underpins build tools like Vite.

GitButler is a Git-based version control client with both a desktop GUI and a `but` CLI, built around virtual/stacked branches, easy commit editing, an undo timeline, and AI-assisted workflows. It acts as a friendlier, more powerful drop-in replacement for the vanilla Git interface in any existing repo.

Redux is a small, predictable state container for JavaScript apps, built around a single immutable store, plain action objects, and pure reducer functions. Its official Redux Toolkit layer abstracts away boilerplate and codifies recommended patterns for real-world apps.

Zustand is a minimal, hook-based state management library for React (with a framework-agnostic vanilla core) built on simplified flux principles. It avoids context providers and boilerplate while handling React's tricky edge cases like zombie children and concurrency.

TanStack Query is an async state management library for fetching, caching, synchronizing, and updating server state in web apps. It abstracts the lifecycle of asynchronous data with declarative queries and mutations, supporting any data source (REST, GraphQL, promises) across React, Vue, Svelte, Solid, and Angular.

React Hook Form is a performant, dependency-free form library for React that uses uncontrolled inputs and hooks (register, handleSubmit, formState) to minimize re-renders, with built-in HTML validation and schema resolvers for Zod, Yup, Joi, and others.

Vuex is the formerly-official centralized state management library for Vue.js, providing a single store with predictable, mutation-controlled state and Vue devtools integration for time-travel debugging. It has been superseded by Pinia as Vue's recommended state solution and is now in maintenance mode.

MobX is a signal-based reactive state management library that makes any object observable and automatically tracks which derived computations and UI components depend on which fields, re-running only what's strictly needed. It's framework-agnostic at its core but most commonly paired with React via mobx-react/mobx-react-lite.

appwrite is an open-source TypeScript project with 56.3k GitHub stars. It is associated with android, appwrite, backend, backend-as-a-service. The repository is actively maintained, with recent commits.

requests is an open-source Python project with 54k GitHub stars. It is associated with client, cookies, forhumans, http. The repository is actively maintained, with recent commits.

directus is an open-source TypeScript project with 36k GitHub stars. It is associated with api, app, cms, composable. The repository is actively maintained, with recent commits.

django-rest-framework is an open-source Python project with 30.1k GitHub stars. It is associated with api, django, python, rest. The repository is actively maintained, with recent commits.

better-auth is an open-source TypeScript project with 28.7k GitHub stars. It is associated with authentication, iam, oauth, oauth2. The repository is actively maintained, with recent commits.

next-auth is an open-source TypeScript project with 28.3k GitHub stars. It is associated with auth, authentication, csrf, jwt. The repository is actively maintained, with recent commits.

Tiptap is a headless, framework-agnostic rich text editor built on top of ProseMirror. It ships no UI of its own, instead exposing a composable extension system that lets developers build fully custom editing experiences in React, Vue, or vanilla JavaScript.

Slate is a completely customizable framework for building rich text editors in React. Rather than shipping a fixed editor, it provides a schema-less, plugin-driven core and a nested document model so developers can implement editors like Medium, Dropbox Paper, or Google Docs without fighting against built-in assumptions.

p5.js is an open-source JavaScript project with 23.7k GitHub stars. It is associated with art, creative-coding, design, education. The repository is actively maintained, with recent commits.

Trix is a WYSIWYG rich text editor from 37signals (creators of Rails) that powers writing in Basecamp. Rather than relying on contenteditable/execCommand directly, it treats the browser's editable surface as an I/O device, mapping input onto an internal document model and re-rendering to produce clean, consistent HTML.

wangEditor is an open-source, web-based rich text (WYSIWYG) editor written in TypeScript, popular in the Chinese developer community. It ships with framework integrations and a configurable toolbar for building content-editing experiences in the browser.

Plate is a TypeScript rich-text editor framework built on Slate and slate-react, offering a plugin system plus a large catalog of plugins, Radix UI-based headless primitives, and ready-made shadcn/ui components for assembling production editors.

axios is an open-source JavaScript project with 109.1k GitHub stars. It is associated with hacktoberfest, http-client, javascript, nodejs. The repository is actively maintained, with recent commits.

retrofit is an open-source HTML project with 43.9k GitHub stars. It is associated with android, java. The repository is actively maintained, with recent commits.

seaweedfs is an open-source Go project with 32.9k GitHub stars. The repository is actively maintained, with recent commits.

certbot is an open-source Python project with 33.1k GitHub stars. It is associated with acme, acme-client, certbot, certificate. The repository is actively maintained, with recent commits.

guzzle is an open-source PHP project with 23.5k GitHub stars. It is associated with curl, guzzle, http-client, httpclient. The repository is actively maintained, with recent commits.

saleor is an open-source Python project with 23k GitHub stars. It is associated with cart, checkout, commerce, composable. The repository is actively maintained, with recent commits.