Top 10 Open-Source Picks: June 4
A curated look at the 10 open-source repositories that dominated developer attention on Thursday, June 4, 2026. From trending newcomers to steadily-growing community favorites, here is what mattered most.
PaddlePaddle/PaddleOCR
Turn any PDF or image document into structured data for your AI. A powerful, lightweight OCR toolkit that bridges the gap between images/PDFs and LLMs. Supports 100+ languages.
github/spec-kit
💫 Toolkit to help you get started with Spec-Driven Development
lfnovo/open-notebook
An Open Source implementation of Notebook LM with more flexibility and features
jwasham/coding-interview-university
A complete computer science study plan to become a software engineer.
aquasecurity/trivy
Find vulnerabilities, misconfigurations, secrets, SBOM in containers, Kubernetes, code repositories, clouds and more
mvanhorn/last30days-skill
AI agent skill that researches any topic across Reddit, X, YouTube, HN, Polymarket, and the web - then synthesizes a grounded summary
codecrafters-io/build-your-own-x
Master programming by recreating your favorite technologies from scratch.
openclaw/openclaw
Your own personal AI assistant. Any OS. Any Platform. The lobster way. 🦞
obra/superpowers
An agentic skills framework & software development methodology that works.
Editor's Takeaway
On June 4, 2026, these 10 repositories captured the attention of developers worldwide. Leading the charge were hermes-agent, PaddleOCR, spec-kit alongside 7 other compelling projects, with each representing a different facet of where open-source momentum is heading. What ties them together is community trust: high star counts, active contributors, and real-world utility. If you haven't already, explore each project on its detail page, check out the contributor leaderboard, and consider starring the ones that solve problems you care about. Open source thrives when people engage, and these 10 repos are the proof.