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An open-source AI tools directory with clear use cases, visible source freshness, and maintenance evidence for anyone deciding what to try.

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Rankings use public ecosystem signals. Treat them as a starting point, then confirm license, setup, safety, and fit with the upstream project.
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Project comparison

9router vs langchain

Compare adoption, momentum, maintenance health, and project basics before choosing which tool to evaluate deeper.

9router

Unlimited FREE AI coding. Connect Claude Code, Codex, Cursor, Cline, Copilot, Antigravity to FREE Claude/GPT/Gemini via 40+ providers. Auto-fallback, RTK -40% tokens, never hit limits.

Best matched with other agent tools.

25.1K
Stars
+16.8K
Weekly
92/100
Health
langchain

The agent engineering platform.

Best matched with other agent tools.

147.4K
Stars
+599
Weekly
84/100
Health

Quick Take

Adoption

langchain has the larger GitHub footprint with 147.4K stars.

Momentum

9router is currently growing faster at +16.8K stars this week.

Maintenance

9router has the stronger automated maintenance signal at 92/100. This is not a security or fit verdict.

Side-by-side evidence

Use these signals to narrow your choice, then confirm setup, license, and fit upstream.

Signal9routerlangchain
Evidence statusBasic listing· 2026-10-04 09:18 UTCVerified snapshot· 2026-10-04 09:19 UTC
GitHub stars25.1K147.4K
Weekly growth+16.8K+599
Health scoreStrong92/100Strong84/100
Contributors2403.7K
Commits per week37.750.5
Open issues1.5K569
LanguageJavaScriptPython
LicenseMITMIT
Last commit2026-08-05 09:50 UTC2026-10-03 08:31 UTC
Last releasev0.5.35langchain-core==1.4.0

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