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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

Mastra vs Copilotkit

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

Mastra

Mastra is the modern TypeScript framework for AI-powered applications and agents.

Best matched with other interface tools.

26.4K
Stars
+2.7K
Weekly
92/100
Health
Copilotkit

The Frontend Stack for Agents & Generative UI. React, Angular, Mobile, Slack, and more. Makers of the AG-UI Protocol

Best matched with other interface tools.

36.2K
Stars
+5.0K
Weekly
86/100
Health

Quick Take

Adoption

Copilotkit has the larger GitHub footprint with 36.2K stars.

Momentum

Copilotkit is currently growing faster at +5.0K stars this week.

Maintenance

Mastra 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.

SignalMastraCopilotkit
Evidence statusBasic listing· 2026-10-04 09:17 UTCBasic listing· 2026-10-04 09:17 UTC
GitHub stars26.4K36.2K
Weekly growth+2.7K+5.0K
Health scoreStrong92/100Strong86/100
Contributors571206
Commits per week201.6498.5
Open issues512395
LanguageTypeScriptTypeScript
LicenseNOASSERTIONMIT
Last commit2026-07-22 17:00 UTC2026-07-22 16:54 UTC
Last release@mastra/core@1.51.0angular/v0.2.0

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