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Multiagent GitHub Repositories (2026) · Open Source Tools

Discover the best Multiagent open source repositories on GitHub. Explore trending tools, live star counts, source code, and developer projects updated daily.

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9 matching projects · updated Nov 13, 2026 How we rank ↗
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Atmosphere
#9 TRENDING Atmosphere/atmosphere Java 2010

Portable AI agent runtime for the JVM. One @Agent class runs on Spring AI, LangChain4j, Anthropic, or 9 more behind one SPI. Token streaming, tool calls, human approvals, and governance over WebSocket, SSE, gRPC, or WebTransport/HTTP3. Speaks MCP, A2A, and AG-UI.

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