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A privacy-first messaging platform with no user identifiers of any kind — no phone numbers, usernames, or even random IDs. Uses double-ratchet E2EE with post-quantum key exchange and an additional encryption layer. Supports self-hosted servers, iOS/Android/desktop/CLI apps, groups, audio/video calls, disappearing messages, Tor access, and bot API. Audited by Trail of Bits.

Haskell
12.0k

An open format by Google for describing visual design systems to AI coding agents in a single DESIGN.md file, combining machine-readable YAML tokens with human-readable prose rationale. Includes a CLI for linting, diffing, and exporting tokens to Tailwind CSS and W3C DTCG formats, ensuring design consistency across agent sessions and tools.

TypeScript
20.7k
commaai/openpilot

An open-source robotics operating system that upgrades the driver assistance system on 332+ supported cars, providing adaptive cruise control and automated lane centering. Follows ISO26262 safety guidelines with driver monitoring and strict actuator limits.

Python
61.7k

A local git proxy that intercepts your push, spins up an isolated disposable worktree, and runs an AI-driven validation pipeline (review → test → lint → push → PR → CI). Only forwards the branch after every check passes. Supports multiple AI agents (Claude, Codex, OpenCode etc.), auto-fixes safe issues, escalates intent-touching changes for human approval, and opens clean PRs automatically.

Go
3.2k
grafana/grafana

Open-source observability and visualization platform. Connect Prometheus, Loki, Elasticsearch, InfluxDB, PostgreSQL and more — build dynamic dashboards, set unified alerts with multi-channel notifications, explore metrics and logs in real time, and extend capabilities via a rich plugin ecosystem.

TypeScript
74.8k

A comprehensive curated list of SaaS, PaaS, and IaaS offerings with free developer tiers, covering 50+ categories including cloud providers, CI/CD, databases, monitoring, security, authentication, email, DNS, hosting, and more—helping DevOps and developers quickly discover free-tier cloud services for building and shipping projects.

HTML
123.6k

MinerU is a high-accuracy open-source document parsing engine that converts PDF, DOCX, PPTX, XLSX and images into LLM-ready Markdown/JSON. Powered by VLM+OCR dual-engine with 109-language OCR, formula-to-LaTeX and table-to-HTML conversion. Supports pure CPU inference, MCP Server, LangChain/Dify integration, and multi-GPU deployment.

Python
70.2k

An installable AI Agent Skill that distills Zhang Xuefeng's cognitive framework into 5 mental models (social sieve theory, employment reverse reasoning, etc.), 8 decision heuristics, and a full expression DNA — enabling AI agents to analyze college major selection, grad school choices, and career planning from his pragmatic perspective. Researched from 5 books and 15+ interviews, compatible with 50+ agent runtimes including Claude Code and Cursor.

9.2k

Self-hosted travel planner with real-time collaboration, interactive maps, budget tracking with expense splitting, packing lists, journey journal, reservations, PWA with offline support, AI integration via MCP (150+ tools), OIDC SSO, 2FA, and Passkeys — deploy in seconds with Docker.

TypeScript
7.4k

Top Repositories

The most popular repositories on GitHub.

1

A comprehensive collection of step-by-step tutorials for rebuilding popular technologies from scratch. Covers databases, operating systems, programming languages, web servers, AI models, and more across multiple languages. Perfect for developers seeking to deeply understand core tech principles through hands-on implementation.

2

A curated list of awesome lists covering all kinds of interesting topics. This meta-list serves as the central directory for discovering high-quality resources on programming languages, frameworks, tools, and various technology domains.

3

The world's largest free coding education platform. Offers a self-paced full-stack web development and machine learning curriculum with interactive coding challenges, certifications across responsive web design, JavaScript, Python, databases, and APIs, plus developer language certifications. Built on React, Fastify, and Gatsby, with a vibrant open-source community that has helped over 100,000 people land their first developer job.

4

A collectively curated list of free public APIs for software and web development. This extensive repository contains thousands of APIs across 100+ categories including animals, finance, health, music, news, science, sports, weather, and more. Maintained by the community and APILayer team.

5

A collaborative, multilingual collection of freely available programming books, courses, podcasts, and interactive tutorials. Maintained by the Free Ebook Foundation, it indexes thousands of learning resources across numerous programming languages and computer science topics.

6

OpenClaw is a self-hosted personal AI assistant that connects to WhatsApp, Telegram, Discord, iMessage and 20+ channels. Features voice wake, live canvas, browser automation, and runs on any OS with local-first privacy.

7

Community-driven interactive roadmaps, guides, and resources for developers. Covers frontend, backend, DevOps, AI, and more with clickable nodes for detailed learning paths and best practices.

8

Learn how to design large-scale systems. Prep for the system design interview. An organized collection of resources covering scalability, performance, availability, and common system design patterns with solutions and Anki flashcards.

9

A comprehensive multi-month self-study plan for software engineering interviews at top tech companies. Covers data structures, algorithms, Big-O, graphs, dynamic programming, system design, and more, with curated video courses, book recommendations, coding practice platforms, and flashcard strategies.

10

A curated list of awesome Python frameworks, libraries, software and resources. Covers web frameworks, data analysis, machine learning, testing, and more.