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Best open-source AI coding agents for the terminal

Agents that read your project, edit files and run commands for you.

  1. Have an AI agent write and fix code in your terminal
    ★ 224kstars
    opencode by anomalyco · Free alternative to Cursor, Claude Code
    Popular, works with any model
    Some setupCommand-line toolHealthy
  2. Use Google's Gemini AI agent in your terminal
    ★ 109kstars
    gemini-cli by google-gemini · Free alternative to Claude Code
    Generous free tier with a Google account
    Some setupCommand-line toolHealthy
  3. Let OpenAI's coding agent write and run code in your terminal
    ★ 133kstars
    codex by openai · Free alternative to Cursor
    OpenAI's open-source coding agent
    Some setupCommand-line toolHealthy
  4. Pair-program with AI in your terminal
    ★ 49.9kstars
    aider by Aider-AI · Free alternative to Cursor, GitHub Copilot
    Careful edits with automatic Git commits
    Some setupCommand-line toolHealthy
  5. Have an AI agent install, run and test things for you
    ★ 56.2kstars
    goose by aaif-goose
    Also has a desktop app
    No codingDesktop appHealthy

Ranked for people new to AI: ease of use first, then quality, upkeep and popularity. Last checked 4 Nov 2026.

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