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AI Tools Scout

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

Letta vs Deer Flow

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

Letta

Platform for stateful agents: AI with advanced memory that can learn and self-improve over time.

Best matched with other agent tools.

23.9K
Stars
+1.3K
Weekly
66/100
Health
Deer Flow

An open-source long-horizon SuperAgent harness that researches, codes, and creates. With the help of sandboxes, memories, tools, skill, subagents and message gateway, it handles different levels of tasks that could take minutes to hours.

Best matched with other agent tools.

77.6K
Stars
+10.7K
Weekly
90/100
Health

Quick Take

Adoption

Deer Flow has the larger GitHub footprint with 77.6K stars.

Momentum

Deer Flow is currently growing faster at +10.7K stars this week.

Maintenance

Deer Flow has the stronger automated maintenance signal at 90/100. 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.

SignalLettaDeer Flow
Evidence statusBasic listing· 2026-10-04 09:17 UTCBasic listing· 2026-10-04 09:18 UTC
GitHub stars23.9K77.6K
Weekly growth+1.3K+10.7K
Health scoreHealthy66/100Strong90/100
Contributors153324
Commits per week0.360.8
Open issues49973
LanguagePythonPython
LicenseApache-2.0MIT
Last commit2026-07-22 00:32 UTC2026-07-22 13:31 UTC
Last release0.16.8v2.0.0

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