Open source. Open possibilities.

Elysia is an ergonomic TypeScript web framework powered by Bun, focusing on end-to-end type safety and developer experience.

Spring Boot is an opinionated, production-grade framework for building stand-alone Spring-based Java applications and services. It offers embedded servers, security, metrics, health checks, and simplified configuration, with no code generation or XML requirements.

Open-source disassembly framework written in pure C, supporting 20+ architectures including x86, ARM, AArch64, RISC-V, MIPS and PowerPC, with a clean architecture-neutral API, multi-language bindings, and detailed instruction semantics for binary analysis and reverse engineering.

Material Design for Bootstrap is a free UI kit offering 700+ components, themes, and templates for building responsive, mobile-first websites. Available for jQuery, Angular, React, and Vue under MIT license.

A lightweight .NET library for building text-based adventure games, with rooms, NPCs, items, commands, conversations, maps, rendering frames and save support.

Laravel Plausible is a Laravel package that integrates the Plausible Analytics API, providing facades to retrieve realtime visitors, aggregates, time series, and breakdowns, with configurable caching and simple Composer installation.

Laravel is a PHP web application framework with expressive syntax, providing routing, ORM, dependency injection, queues, and real-time broadcasting.

Vue 2 is a progressive JavaScript framework for building user interfaces. It reached End of Life on December 31, 2023 and no longer receives features, updates or fixes. New projects are directed to Vue 3 (vuejs/core); the repository remains available through existing distribution channels.

ice.js 是阿里巴巴开源的基于 React 的渐进式应用框架，提供零配置开发体验，支持 TypeScript、Sass、CSS Modules 等，内置文件系统路由、状态管理与请求方案，支持 SSG/SSR 混合渲染、插件系统，并可同时构建 Web、小程序与 Weex 多端应用。

A pure Python, asynchronous interface for the Telegram Bot API, providing both a direct API wrapper and high-level tools for bot development.

A documentation framework built on MkDocs: write in Markdown and produce a searchable, customizable static site in minutes, with responsive layouts, 60+ languages and MIT licensing.

libGDX is a cross-platform Java game development framework based on OpenGL (ES) for Windows, Linux, macOS, Android, web browsers and iOS. It supports 2D and 3D games, uses Gradle for setup, is Apache 2.0 licensed, and has a large third-party ecosystem.

API Platform is a next-generation web framework installer that scaffolds API-first projects with REST/GraphQL APIs, auto-generated documentation, admin interfaces, and Jamstack client apps built on Symfony and React.

flub.js is a tiny DOM microframework with reactive signals, no virtual DOM or compiler, and typed component factories for building browser applications.

Backtesting.py is a Python library for backtesting trading strategies. It offers a simple API, fast execution, a built-in optimizer, composable base strategies, and interactive visualizations for analyzing OHLC(V) financial data.

A curated directory of CSS frameworks organized by category, including base resets, classless frameworks, lightweight options, general-purpose frameworks, Material Design, utility-based, specialized, and stalled projects.

HyperFrames is an open-source framework that converts HTML, CSS, and seekable animations into deterministic MP4 videos, specifically designed for AI coding agents and automated pipelines.

LangChain is a framework designed for building agents and applications powered by Large Language Models (LLMs), providing a modular architecture to chain interoperable components.

Zero-dependency LÖVE2D framework with scenes, input, saves, audio, UI, ECS, physics, and in-game scene editor. Includes reference game Gem Haul. Targets LÖVE 11.5, no third-party libraries.

FastAPI is a modern Python web framework for building APIs with standard type hints, featuring automatic OpenAPI documentation, data validation via Pydantic, high performance via Starlette, and interactive Swagger UI and ReDoc interfaces.