State of Open-Source AI Agent Tools — September 2026

Key findings

• Skills is the fastest-growing tool right now, adding about 26,254 stars per 30 days.
• Agent Frameworks is the fastest-growing category, with about 380,171 new stars per 30 days across 329 tools.
• 32% of tracked tools have had no commit in six months or more, including 68 projects with 5,000+ stars. Stars alone are a poor signal of whether a tool is still maintained.

Fastest-growing tools (stars per 30 days)

Most actively developed (commits in the last 90 days)

1. hermes-agent — 32,240 commits
2. OpenHuman — 21,133 commits
3. elizaOS — 19,953 commits
4. DeepSeek Harness — 19,798 commits
5. omp — 13,784 commits
6. LiteLLM — 13,153 commits
7. OmO — 9,058 commits
8. Agenta — 8,984 commits
9. Kortix — 8,225 commits
10. Codewhale — 7,632 commits

Popular but quiet (5,000+ stars, no commit in 6+ months)

• autoresearch — 97.1k stars, last commit 2026-03-26 (see alternatives)
• MetaGPT — 70.7k stars, last commit 2026-01-21 (see alternatives)
• gpt-engineer — 55.1k stars, last commit 2024-11-17 (see alternatives)
• Grok-1 — 52.2k stars, last commit 2024-03-19 (see alternatives)
• Quivr — 39.6k stars, last commit 2025-06-19 (see alternatives)
• FastChat — 39.6k stars, last commit 2025-06-02 (see alternatives)
• Langchain-Chatchat — 38.7k stars, last commit 2025-11-10 (see alternatives)
• AgentGPT — 36.3k stars, last commit 2025-04-29 (see alternatives)
• Chatbot UI — 33.4k stars, last commit 2024-06-22 (see alternatives)
• STORM — 31.5k stars, last commit 2025-09-30 (see alternatives)
• Google Workspace CLI — 31.2k stars, last commit 2026-03-31 (see alternatives)
• Meta Llama 3 — 29.2k stars, last commit 2025-01-26 (see alternatives)
• Qwen3 — 27.7k stars, last commit 2026-01-09 (see alternatives)
• FLUX — 26.0k stars, last commit 2025-07-31 (see alternatives)
• DeepSeek-Coder — 24.3k stars, last commit 2025-11-11 (see alternatives)

Categories by growth