The Agent ExaminerIndependent Review Authority

Best open-source agent frameworks

Agent frameworks whose core is open source, ranked by our editorial overall score.

How this ranking is built

Included when category is “framework” AND the openSource fact is true. Ranked by editorial overall score.

The editorial score is our opinion, applied by one rubric to every platform including Alfe. See the methodology.

In brief

Best open-source agent frameworks ranks 5 platforms we track. Included when category is “framework” AND the openSource fact is true. Ranked by editorial overall score. Cloudflare Agents currently leads; every row shows the concrete value behind its place.

  1. 1

    Cloudflare Agents

    Framework

    Open source · Editorial score 4.5/5

    4.5/5
  2. 2

    LangGraph Platform

    Framework

    Open source · Editorial score 4.3/5

    4.3/5
  3. 3

    Mastra

    Framework

    Open source · Editorial score 4.2/5

    4.2/5
  4. 4

    CrewAI

    Framework

    Open source · Editorial score 4.0/5

    4.0/5
  5. 5

    Dify

    Framework

    Open source · Editorial score 3.7/5

    3.7/5

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