Best Open source Coding agents

The ranking

1. ★ Editor’s pick

   #1KC

   Kilo Code

   Open source AI coding agent for VS Code, JetBrains, CLI and cloud, with 500+ models at provider rates.

   Visit Kilo Code ↗Read the review →Compare Kilo CodeGet a quote →From Free
2. #2GO

   goose

   Open-source local AI agent — desktop app, CLI and ACP server — running on the LLM provider you bring.

   Best forDevs who want an open source coding agent that reuses an existing Claude or ChatGPT plan

   Visit goose ↗Read the review →Compare gooseGet a quote →From Free
3. #3ZE

   Zed

   Rust-based code editor with a built-in agent panel, ACP external agents and Zed-hosted models.

   Best forDevelopers who want a fast, open-source editor and the freedom to run Claude Code, Codex, Gemini CLI or other vendors' own agents natively via the Agent Client Protocol Zed created, instead of being locked into one editor's built-in agent.

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5. #4WA

   Warp

   Agentic development environment: a terminal, a standalone agent CLI, and unattended cloud coding agents.

   Best forDevelopers and teams who want one open platform that runs and coordinates multiple coding agents (Claude Code, Codex, Gemini CLI, Warp Agent) side by side across terminal, CLI and cloud, with shared team context and programmatic API access to cloud agent runs.

   Visit Warp ↗Read the review →Compare WarpGet a quote →From Free
6. #5LE

   Letta

   Stateful agent harness, cloud and SDK for agents with persistent, git-versioned memory.

   Best forDevelopers and researchers who specifically need an agent whose memory, skills and identity genuinely persist and evolve across long-running sessions, rather than reset on every call.

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7. #6CC

   Codex CLI

   OpenAI's terminal coding agent for inspecting, editing and running repository code from the shell.

   Best forDevelopers who already pay for a ChatGPT plan and want a terminal-native agent with granular, inspectable sandbox/permission controls across CLI, desktop and IDE surfaces.

   Choose Codex CLI if you want an open-source agent backed by a large lab's ongoing investment (OpenAI), not an independent project, with the tradeoff that it defaults to OpenAI's own models.

   Visit Codex CLI ↗Read the review →Compare Codex CLIGet a quote →From Free
8. #7OP

   OpenCode

   Open source AI coding agent for the terminal, desktop app and IDE, with 75+ model providers.

   Best forDevelopers who want a genuinely free, fully open-source coding agent that works with any model provider, including their own local Ollama models, without being locked into one vendor's terminal tool.

   Visit OpenCode ↗Read the review →Compare OpenCodeGet a quote →From Free
9. #8ZO

   zot

   Single-binary terminal coding agent harness in Go, with 30+ model providers and any-language extensions.

   Best forDevelopers who want a fast, free, Go-native coding-agent harness with real session-branching control and are comfortable running fast-moving, self-described "beta forever" software from an independent maintainer.

   Visit zot ↗Read the review →Compare zotGet a quote →From Free
10. #9JU

    JugglerVerified

    Visual workbench for AI coding agents: branching conversation trees, inspectable model transactions, local or remote.

    Best forDevelopers who want hands-on visibility into what an AI coding agent is doing to their codebase and accept early-stage, self-hosted, open-source software.

    Choose Juggler if you specifically want AGPLv3 (a copyleft license that affects SaaS redistribution) and a GUI-first, branching-session workflow.

    Visit Juggler ↗Read the review →Compare JugglerGet a quote →From Free
11. #10OP

    OpenHands

    Open-source software engineering agent with GUI, CLI, SDK and an enterprise control plane.

    Best forOpen source-minded engineering teams and enterprises that want a self-hostable coding agent platform

    Choose OpenHands if you need an open-source platform designed for enterprise self-hosting, with sandboxed deployment and an embeddable SDK that a personal CLI tool does not give you.

    Visit OpenHands ↗Read the review →Compare OpenHandsGet a quote →From Free
12. #11AI

    Aider

    Open-source terminal AI pair programmer that edits files in your local git repo and commits the changes.

    Best forMost mature MIT-licensed option, no vendor lock-in

    MIT-licensed, terminal-native, and the most mature of the open-source options here, so a safe default if you just want a free, transparent agent with no vendor lock-in.

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13. #12CL

    Cline

    Open-source coding agent for VS Code, JetBrains, the terminal and CI, running on whichever model you bring.

    Best forDevelopers and teams who want a transparent, open-source, model-agnostic agent they fully control and pay for by usage, with optional flat-rate access to open-weight models.

    Visit Cline ↗Read the review →Compare ClineGet a quote →From Free