A curated directory of free public APIs, organized by category and updated by a large community, helping developers find available endpoints for their projects.
Open source. Open possibilities.
Discover quality open-source projects, submit projects anonymously, and claim and edit your own project.
A little curiosity. A world of open source.
THE FIRST COLLECTIONMaintains updated lists of public BitTorrent trackers across multiple protocols (HTTP, HTTPS, UDP, WebSocket, I2P, Yggdrasil). Automatically checked and sorted by popularity and latency.
A community-curated directory of public APIs for developers, organized by category with details on authentication, HTTPS, and CORS support.
Curated collection of awesome lists covering platforms, programming languages, front-end, big data, security, and many other topics. A popular starting point for developers.
A curated list of C++ and C frameworks, libraries, tools, and resources. Covers standard libraries, AI, GUI, networking, audio, math, and more—organized into comprehensive categories for C++ developers.
Curated reading list on building scalable, reliable, high-performance large-scale systems, with design principles, case studies from tech giants, and interview resources.
Open-source front-end quality system with 385 rules across 11 categories (HTML, CSS, JavaScript, performance, accessibility, SEO, security, images, testing, privacy, i18n). Supports web browsing, MCP server integration for AI agents, and skills-based workflows.