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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

Fastmcp vs langchain

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

Fastmcp

🚀 The fast, Pythonic way to build MCP servers and clients.

Best matched with other agent tools.

26.8K
Stars
+1.6K
Weekly
86/100
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

Fastmcp is currently growing faster at +1.6K stars this week.

Maintenance

Fastmcp has the stronger automated maintenance signal at 86/100. 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.

SignalFastmcplangchain
Evidence statusBasic listing· 2026-10-04 09:18 UTCVerified snapshot· 2026-10-04 09:19 UTC
GitHub stars26.8K147.4K
Weekly growth+1.6K+599
Health scoreStrong86/100Strong84/100
Contributors2733.7K
Commits per week20.750.5
Open issues251569
LanguagePythonPython
LicenseApache-2.0MIT
Last commit2026-07-22 12:01 UTC2026-10-03 08:31 UTC
Last releasev3.4.4langchain-core==1.4.0

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