Open source. Open possibilities.

A curated directory of free public APIs, organized by category and updated by a large community, helping developers find available endpoints for their projects.

A curated awesome list of Flutter resources, featuring libraries, UI components, tutorials, articles, videos, and open-source apps.

A community-curated directory of public APIs for developers, organized by category with details on authentication, HTTPS, and CORS support.

ZenUI Library React is an open-source UI component library built with React and Tailwind CSS. It offers 800+ components, 20+ templates, 100+ animated components, 500+ icons and color tools, and is used by copying code snippets into your project.

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 English-language collection of bookmarks, resources, articles, and tools about design systems for developers, covering design tools, design tokens, pattern libraries, component testing, books, and talks.

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.

This open-source collection features AI Agent books, tutorials, and code repositories from GitHub, covering LLM Agent resources, courses, and frameworks. It supports daily automatic Star count updates, sorting by popularity, and provides recommended reading paths for developers and learners.

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.

A curated collection of 150+ tools and techniques for red teaming and penetration testing, organized by MITRE ATT&CK framework categories covering reconnaissance, initial access, execution, privilege escalation, defense evasion, credential access, lateral movement, command and control, exfiltration, and impact.