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. A multi-platform, AI-augmented coding companion ensuring secure development with unit test creation.

    Cost / License

    • Free
    • Open Source (MIT)

    Application type

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • Visual Studio Code
    Good alternative?
     
  2. Amazon CodeWhisperer is a general purpose, machine learning-powered code generator that provides you with code recommendations in real time. As you write code, CodeWhisperer automatically generates suggestions based on your existing code and comments.

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • IntelliJ IDEA
    • Visual Studio Code
    • Linux
    • Mac
    • Windows
    Good alternative?
     
  3. v0 by Vercel icon
     10 likes

    AI-powered user interface system generates copy-paste-ready React code using simple text prompts. Enhances design productivity with choices or customizable fine-tuning for refined outputs powered by shadcn/ui and Tailwind CSS. Flexible to adapt to specific project needs straightforwardly.

    90 v0 by Vercel alternatives

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Online
    • iPhone
    • Software as a Service (SaaS)
    Good alternative?
     
  4. TabNine icon
     18 likes

    Auto-completion for any programming language, using machine-learning.

    95 TabNine alternatives

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • US flagUnited States
    TabNine screenshot 1
    Good alternative?
     
  5. Bolt.new icon
     10 likes

    Bolt.new is an in-browser AI web development agent that leverages StackBlitz’s WebContainers to allow for full stack application development. The application presents users with a simple, chat-based environment in which one prompts an agent to make code changes that are updated...

    164 Bolt.new alternatives

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Online
    Good alternative?
     
  6. OpenGUI icon
     7 likes

    Desktop + web command center for OpenCode, Claude Code, Codex, and Pi. Multi-project AI coding sessions with streaming chat, prompt queue, model switching, and MCP tools.

    Cost / License

    • Free
    • Open Source (MIT)

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Self-Hosted
    • Docker
    Good alternative?
     
  7. Osaurus icon
     5 likes

    Local AI agents on your Mac. Private, offline, free. Open models run on Apple Silicon; add ChatGPT, Claude or Gemini only when you choose.

    Cost / License

    • Free
    • Open Source (MIT)

    Application type

    Platforms

    • Mac
    Good alternative?
     
  8. Trag icon
     7 likes

    Trag enhances code review efficiency through AI, allowing specific instructions and pattern linting. Requires GitHub integration, free for open-source uses. Saves substantial engineer time by providing AI-reviewed code ahead of manual inspection.

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Online
    • Software as a Service (SaaS)
    • CH flagSwitzerland
    Trag screenshot 1
    Good alternative?
     
  9. Twinny icon
     9 likes

    The most no-nonsense locally hosted (or API hosted) AI code completion plugin for Visual Studio Code, like GitHub Copilot but 100% free and 100% private.

    Cost / License

    • Free
    • Open Source (MIT)

    Application type

    Alerts

    • Discontinued

    Platforms

    • Windows
    • Mac
    • Linux
    • Visual Studio Code
    Good alternative?
     
  10. CodeGeeX icon
     20 likes

    CodeGeeX is an AI-based coding assistant, which can suggest code in the current or following lines. It is powered by a large-scale multilingual code generation model with 13 billion parameters, pretrained on a large code corpus of more than 20 programming languages.

    Cost / License

    Application type

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Self-Hosted
    • Software as a Service (SaaS)
    Good alternative?
     
  11. Clinde icon
     6 likes

    Experience powerful AI without limits. Use our desktop app for everyday AI assistance, or boost your coding productivity with our JetBrains plugin.

    Cost / License

    • Paid
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    Good alternative?
     
  12. With JetBrains AI, your favorite tools gain new abilities while you are empowered with more information at your fingertips.

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • JetBrains Rider
    • CLion
    • IntelliJ IDEA
    • Pycharm
    • PhpStorm
    • RubyMine
    • WebStorm
    • ReSharper
    Good alternative?
     
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