Today's GitHub Trending reveals a clear pattern: AI developer tools dominate the ranking, but the classic build-your-own-x remains unstoppable.
Today's repositories
1. codecrafters-io/build-your-own-x ★ 527,703 (+1,068 today) Markdown — The eternal leader. The guide to rebuilding technologies from scratch remains the most-starred repo and one of the most active today.
2. PostHog/posthog ★ 36,293 (+438 today) Python — The AI observability and analytics platform is on the rise. With features from session replay to AI observability, PostHog is consolidating as the open-source alternative to Datadog.
3. Nutlope/hallmark ★ 12,326 (+1,485 today) CSS — The fastest-growing repo today. An anti-AI-slop design skill for Claude Code and Cursor that teaches the model to generate quality-designed code.
4. github/copilot-sdk ★ 9,836 (+233 today) Java — Microsoft's cross-platform SDK for integrating GitHub Copilot Agent into apps and services.
5. HenryNdubuaku/maths-cs-ai-compendium ★ 6,774 (+200 today) TypeScript — A massive compendium for becoming an AI/ML research engineer. Covers math fundamentals to modern deep learning architectures.
6. PrismML-Eng/Bonsai-demo ★ 1,761 (+278 today) ? — A machine learning framework demo with accelerated growth.
7. anthropics/cwc-workshops ★ 1,650 (+45 today) TypeScript — Workshop materials from Anthropic (creators of Claude).
8. protocolbuffers/protobuf ★ 71,563 (+11 today) C++ — Google's classic appears on trending due to recent updates.
Trend analysis
Three clear signals: (1) tools that improve AI-generated code quality are exploding — the market has shifted from "using AI" to "using AI well"; (2) massive educational content dominates the top; (3) classic infrastructure (protobuf) appears when least expected, a reminder that engineering fundamentals don't get replaced by AI hype.
Source: GitHub Trending
