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  1. 3149

    mobile-harness

    Markdown-based harness that lets AI agents inspect, control, and recover real Android and iOS devices via one API.

    Extensionmobile-harness.comOpen Source

    @nielsmdt99 · Developer Tools

  2. 669

    DeepSeek Harness

    Plugin-based agent runtime where models, tools, sandboxing, and storage are swappable parts on the Cordis kernel.

    Runtimedeepseek.comOpen Source

    deepseek-ai · AI Agents

  3. 861

    Harness

    Meta-skill that designs domain-specific agent teams and defines the specialized agents inside them.

    Extensiongithub.com/revfactory/harness

    revfactory · Developer Tools

  4. 818

    Omnigent

    Open-source meta-harness that wraps agent harnesses like Claude Code and Cursor with policy controls and sandboxing.

    Runtimegithub.com/omnigent-ai/omnigentOpen Source

    omnigent-ai · AI Agents

  5. 87

    Claw Code

    Clean-room Python and Rust rewrite of Claude's agent harness, focused on agent orchestration and tool workflows.

    github.com/instructkr/claude-codeOpen Source

    @satyawani_aman · AI Agents

  6. 3316

    Proteus

    Lets any agent harness evolve its own source over repeated episodes and measures how it changes.

    Library / Frameworkgithub.com/proteus-evolve/proteusOpen Source

    AI Agents

  7. 3070

    Agensh: A Decentralized, Scalable Multiagent Harness

    Multi-agent harness where up to 1,024 agents self-organize through a shared Gitea workspace and chat.

    Agentgithub.com/microsoft/agensh

    AI Agents

  8. 236

    Agent Orchestrator

    Orchestration platform for fleets of parallel AI coding agents, each on its own branch handling CI and reviews.

    Agentgithub.com/composiohq/agent-orchestratorOpen Source

    @ComposioHQ · AI Agents

  9. 1374

    Meta-Harness

    Agent scaffolding from Stanford's IRIS Lab that scored 76.4% on Terminal-Bench 2.0 with Claude Opus 4.6.

    https://github.com/stanford-iris-lab/meta-harness-tbench2-artifactOpen Source

    stanford-iris-lab · AI Agents

  10. 3887

    AX

    Runs agentic tasks in sandboxed environments defined via YAML, scaling to billions per cluster.

    Runtimeagentexecutor.io

    AI Agents

  11. 1231

    System One Harness (SOH)

    Turns a System One decision model into a confidence-gated agent loop with full traces

    Library / Frameworkgithub.com/harnessrouter/systemoneharnessOpen Source

    AI Agents

  12. 1089

    Dexto

    Open-source agent harness that turns LLMs into stateful, tool-using agents with persistent memory and approval gates.

    Runtimegithub.com/truffle-ai/dextoOpen Source

    truffle-ai · AI Agents

  13. 93

    AutoGen

    Microsoft framework for building multi-agent AI applications with code execution, function calling, and orchestration.

    Library / Frameworkhttps://github.com/microsoft/autogenOpen Source

    microsoft · AI Agents

  14. 1503

    AnyTool

    Universal tool-use layer that orchestrates arbitrary tools and MCP servers for computer-use agents.

    https://github.com/hkuds/anytoolOpen Source

    hkuds · AI Agents

  15. 2237

    Castforge

    Orchestrates multiple AI coding agents as a simulated dev team with distinct roles on a live Kanban-style board.

    Agentcastforge.aiFreemium

    AI Agents

  16. 3057

    RLM Agents

    Harness layered over Deep Agents for reinforcement-learning-style workflows across multiple agents.

    Library / Frameworkhttps://github.com/hmbown/rlmagentsOpen Source

    Hmbown · AI Agents

  17. 3158

    Go Harnessless

    Go daemon that bridges Chrome DevTools Protocol, a port of harnessless for concurrent browser automation.

    Servicehttps://github.com/browser-use/go-harnesslessOpen Source

    browser-use · Developer Tools

  18. 895

    AgentScope Runtime

    Runs agent apps in production, sandboxing their tools and exposing them through Agent-as-a-Service APIs.

    Runtimehttps://github.com/agentscope-ai/agentscope-runtimeOpen Source

    agentscope-ai · AI Agents

  19. 1623

    Water

    Python framework for building multi-agent workflows with first-class observability.

    Library / Frameworkhttps://github.com/manthanguptaa/waterOpen Source

    manthanguptaa · AI Agents

  20. 3179

    Code Mesh

    Multi-agent orchestration system where coding agents collaborate over a shared mesh of edits and tests.

    Agentgithub.com/ruvnet/code-meshOpen Source

    ruvnet · AI Agents

  21. 954

    Claude Code Harness

    Development harness that structures Claude Code sessions for repeatable output.

    github.com/chachamaru127/claude-code-harness

    chachamaru127 · Developer Tools

  22. 3113

    VoltAgent AI Agent Platform

    Stack for multi-agent systems that pairs orchestration and memory with RAG, workflows, and observability.

    Library / Frameworkhttps://github.com/voltagent/ai-agent-platformOpen Source

    voltagent · AI Agents

  23. 710

    Agentic Plugin Marketplace (wshobson/agents)

    Marketplace of agentic plugins, agents and skills generated for five coding harnesses.

    Extensiongithub.com/wshobson/agentsOpen Source

    wshobson · AI Agents

  24. 1529

    KISS

    A Rust-built agent harness inspired by Pi, embeddable via SDKs and a browser-only WASM build.

    Library / Frameworkgithub.com/racetozero/kiss

    Developer Tools

  25. 3049

    FastAgent

    Python framework for LLM agents covering tool use, computer use, and multi-agent orchestration.

    Library / Frameworkhttps://github.com/hkuds/fastagentOpen Source

    HKUDS · AI Agents

  26. 1790

    Linear Coding Agent Harness

    Harness that turns a Linear issue into an assignment for an autonomous coding agent, from code to pull request.

    Utilityhttps://github.com/coleam00/Linear-Coding-Agent-HarnessOpen Source

    coleam00 · AI Agents

  27. 680

    OpenHands

    Open-source autonomous software development agent, formerly OpenDevin, run self-hosted or on a hosted cloud.

    Agentall-hands.devFreemium

    openhands · Developer Tools

  28. 1175

    Ordewell

    Turns one goal into an ordered plan of coding-agent tasks, then runs and verifies them.

    Agentgithub.com/ordewell/ordewellOpen Source

    AI Agents

  29. 190

    Swarm

    OpenAI's educational multi-agent orchestration framework built around agent handoffs with shared context.

    Library / Frameworkhttps://github.com/openai/swarmOpen Source

    openai · AI Agents

  30. 3240

    AgentCraft

    RTS-style game interface for commanding AI agents, with visual control and lifecycle management.

    Applicationwww.getagentcraft.comOpen Source

    @idosal1 · AI Agents