Back to search
Open Source Agent Harnesses
An agent harness is software that lets an AI model plan and execute tasks on your machine: read files, run commands, call APIs, and install open source tools for you.
All facts verified 2026-07-20 from the linked repositories. Landing pages probed and confirmed 2026-07-20. Stars are point-in-time snapshots and will change.
Personal assistants
General-purpose harnesses that handle conversations, automations, and persistent memory across sessions without being scoped to a codebase.
| Name | License | Stars | Install | Works with | Last activity |
|---|---|---|---|---|---|
| OpenClawcode | MIT | 384k | n/a | n/a | 2026-07-20 |
| Hermes Agentcode | MIT | 218k | curl -fsSL https://hermes-agent.nousresearch.com/install.sh | bash | Nous Portal, OpenRouter, OpenAI, Anthropic, xAI, DeepSeek | 2026-07-08 |
| ElizaOScode | MIT | 19k | bun add -g elizaos@beta | On-device (Eliza-1/Gemma-4), Eliza Cloud hosted inference | 2026-07-31 |
Coding agents
Harnesses built for software development: they read your codebase, propose and apply changes, run tests, and manage dependencies.
| Name | License | Stars | Install | Works with | Last activity |
|---|---|---|---|---|---|
| OpenCodecode | MIT | 188k | npm i -g opencode-ai@latest | OpenAI, Google Gemini, GitHub Copilot | 2026-07-16 |
| Claude CodecodeProprietary | LicenseRef-Anthropic-Commercial | 138k | npm install -g @anthropic-ai/claude-code | Anthropic | 2026-07-19 |
| Codex CLI | Apache-2.0 | 100k | npm install -g @openai/codex | OpenAI | 2026-07-18 |
| OpenHandscodeOpen Core | MIT | 81k | npm install -g @openhands/agent-canvas | Any LLM | 2026-07-15 |
| Pi | MIT | 73k | npm install -g @earendil-works/pi-coding-agent | OpenAI, Anthropic, Google | 2026-07-16 |
| Open Interpretercode | AGPL-3.0 | 67k | n/a | n/a | n/a |
| Clinecode | Apache-2.0 | 65k | npm i -g cline | Anthropic, OpenAI, Google Gemini, OpenRouter, AWS Bedrock, Azure, Ollama | 2026-07-20 |
| Goosecode | Apache-2.0 | 51k | curl -fsSL https://github.com/aaif-goose/goose/releases/download/stable/download_cli.sh | bash | Anthropic, OpenAI, Google, Ollama, OpenRouter, Azure, Bedrock | 2026-07-14 |
| Aidercode | Apache-2.0 | 48k | python -m pip install aider-install && aider-install | Anthropic, OpenAI, DeepSeek, Ollama, OpenRouter | 2025-08-09 |
| Gemini CLIcode | Apache-2.0 | 106k | n/a | Google Gemini | n/a |
| Continuecode | Apache-2.0 | 35k | n/a | n/a | n/a |
| Reasonixcode | MIT | 27k | npm i -g reasonix | DeepSeek, OpenAI-compatible endpoints | 2026-07-20 |
| Kilo Codecode | MIT | 26k | npm install -g @kilocode/cli | Claude, GPT, Gemini, DeepSeek | 2026-07-16 |
| Qwen Codecode | Apache-2.0 | 26k | npm install -g @qwen-code/qwen-code@latest | OpenAI, Anthropic, Google Gemini, Qwen, Ollama | 2026-07-19 |
| Crush | n/a | 27k | n/a | n/a | n/a |
| Roo Codecode | n/a | 24k | n/a | n/a | n/a |
| jcodecode | MIT | 9k | curl -fsSL https://jcode.sh/install | bash | Claude, OpenAI, Gemini, GitHub Copilot, Azure, Ollama, DeepSeek | 2026-07-20 |
| CodebuffcodeOpen Core | Apache-2.0 | 8k | npm install -g freebuff | DeepSeek, Kimi, MiniMax | 2026-07-20 |
| ForgeCodecode | Apache-2.0 | 7k | curl -fsSL https://forgecode.dev/cli | sh | Claude, GPT, Grok, DeepSeek, Gemini | 2026-07-16 |
| SWE-agentcode | n/a | 20k | n/a | n/a | n/a |
| gptmecode | MIT | 4k | python -m pip install gptme | Anthropic, OpenAI, Google Gemini, xAI, DeepSeek, Ollama | 2026-07-17 |
| letta-codecode | Apache-2.0 | 3k | npm install -g @letta-ai/letta-code | Any LLM | 2026-07-20 |
| Devonstale | AGPL-3.0 | 3k | pip install devon | Anthropic, OpenAI | 2025-05-26 |
| Plandex | n/a | 16k | n/a | n/a | n/a |
Data sourced from GitHub API, Hacker News, and official documentation. Landing pages verified 2026-07-20. Stars are point-in-time snapshots.