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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

Phoenix vs langchain

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

Phoenix

AI Observability & Evaluation

Best matched with other agent tools.

11.0K
Stars
+1.3K
Weekly
89/100
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

Phoenix is currently growing faster at +1.3K stars this week.

Maintenance

Phoenix has the stronger automated maintenance signal at 89/100. 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.

SignalPhoenixlangchain
Evidence statusBasic listing· 2026-10-04 09:18 UTCVerified snapshot· 2026-10-04 09:19 UTC
GitHub stars11.0K147.4K
Weekly growth+1.3K+599
Health scoreStrong89/100Strong84/100
Contributors2113.7K
Commits per week81.950.5
Open issues866569
LanguagePythonPython
LicenseNOASSERTIONMIT
Last commit2026-08-10 03:46 UTC2026-10-03 08:31 UTC
Last releasearize-phoenix-v19.19.1langchain-core==1.4.0

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