Headroom: open-source token compression for AI agents
Headroom v0.27.0 is an Apache-2.0 context-compression layer for AI agents: library, proxy, agent wrapper, and MCP server. Published savings reach 92% on code search and SRE debugging.
crewAI: multi-agent orchestration framework at 53K GitHub stars
MIT repository (crewAIInc/crewAI) with 53,499 stars and 7,488 forks as of June 14, 2026. Crews+Flows architecture, 14.27M PyPI downloads in the last month, stable release 1.14.7 from June 11, 2026.
Instructor: Pydantic structured outputs for any LLM
MIT Python library (567-labs) for extracting validated Pydantic objects from any LLM. 13.2k stars, 108 releases, 15+ providers. v1.15.2 adds log redaction.