Codex Alternatives

Codex is described as 'One agent for everywhere you code. Powered by OpenAI’s frontier coding models and included in ChatGPT Plus, Pro, Business, Enterprise, and Edu' and is a ai coding assistant in the development category. There are more than 100 alternatives to Codex for a variety of platforms, including Mac, Windows, Linux, Web-based and Visual Studio Code apps. The best Codex alternative is opencode, which is both free and Open Source. Other great apps like Codex are Google Antigravity, Claude Code, Cursor and Void.

filter to find the best alternatives

Codex alternatives are mainly AI Coding Assistants, but if you're looking for Code Editors or IDEs you can filter on that. Other popular filters include Open Source. You can also filter by region, for example EU-based alternatives if you prefer software developed in the European Union. These are just examples - use the filter bar below to find more specific alternatives to Codex.
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Alternatives
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Alternatives list

  1. Oh My Pi icon
     1 like

    AI coding agent for the terminal — hash-anchored edits, optimized tool harness, LSP, Python, browser, subagents, and more.

    Cost / License

    • Free
    • Open Source (MIT)

    Platforms

    • Mac
    • Windows
    • Linux
    • Homebrew
    Good alternative?
     
  2. The 100 line AI agent that solves GitHub issues or helps you in your command line. Radically simple, no huge configs, no giant monorepo—but scores >74% on SWE-bench verified!.

    Cost / License

    • Free
    • Open Source (MIT)

    Platforms

    • Docker
    • GitHub
    Good alternative?
     
  3. Wuwei icon
     1 like

    Free, open-source desktop AI agent operates locally, runs on all major operating systems, supports various AI models, reads and writes files, makes precise code edits, executes commands with permission, keeps code and data on-device, and requires no setup or API key.

    Cost / License

    • Free
    • Open Source (MIT)

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    Good alternative?
     
  4. AICode icon
     1 like

    AICode is a VS Code extension that helps software developers maintain large, complex enterprise software using AI.

    Cost / License

    • Freemium
    • Proprietary

    Platforms

    • Visual Studio Code
    Good alternative?
     
  5. Tatastu icon
     1 like

    Tatastu is the friendly desktop app for building with Claude. It is the visual home for Claude Code and a calmer alternative to editors like Cursor, made for people new to coding or who just want it to feel simple.

    Cost / License

    • Paid
    • Proprietary

    Application type

    Platforms

    • Mac
    Good alternative?
     
  6. Konxios icon
     1 like

    Konxios is a Mac desktop app that sits on top of Ollama/LMStudio and turns local models into a full AI assistant with an actual workspace.

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Mac
    • US flagUnited States
    Konxios screenshot 1
    Good alternative?
     
  7. Kimi Code icon
     1 like

    A coding-focused perk of the Kimi membership, engineered to drop into any dev workflow, answer faster and more reliably, and get programming tasks done in record time.

    Cost / License

    • Paid
    • Proprietary

    Application type

    Platforms

    • Windows
    • Mac
    • Linux
    • Visual Studio Code
    • Cursor
    Good alternative?
     
  8. OpenBlock icon
     1 like

    OB-1 is a terminal-based coding agent — like Claude Code, but with multi-model access and self-optimizing workflows. You bring your own API keys (or use ours), pick the best model for each task, and let OB-1 handle the rest.

    Cost / License

    • Paid
    • Proprietary

    Platforms

    • Windows
    • Linux
    • Mac
    Good alternative?
     
  9. Modo IDE icon
     1 like

    The open-source AI IDE that plans before it codes.

    Cost / License

    Application type

    Platforms

    • Typescript
    • Windows
    • Mac
    • Linux
    • BSD
    Good alternative?
     
  10. Factory icon
     1 like

    A software development agents that work everywhere you do. From IDE to CI/CD - delegate complete tasks like refactors, incident response, and migrations to Droids.

    57 Factory alternatives

    Cost / License

    • Freemium
    • Proprietary

    Platforms

    • Mac
    • Windows
    • Online
    • Linux
    • US flagUnited States
    Factory screenshot 1
    Good alternative?
     
  11. ShaggAi icon
     Like

    ShaggAi is a local-first AI automation and autocomplete platform that turns natural language into real actions on your PC and adds Copilot-style “ghost text” to almost any editor.

    Cost / License

    • Freemium
    • Proprietary

    Platforms

    • Windows
    • Linux
    Good alternative?
     
  12. An AI assistant that lives in your browser and code editor to write, rewrite, improve, translate and develop everything you are working on, using browser On-Device AI.

    32 Ceres Assistant alternatives

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Google Chrome
    • Online
    Good alternative?
     
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