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 50 alternatives to Codex for a variety of platforms, including Mac, Windows, Linux, Web-based and Visual Studio Code apps. The best Codex alternative is Google Antigravity, which is free. Other great apps like Codex are opencode, Claude Code, Void and Windsurf Editor.

filter to find the best alternatives

Codex alternatives are mainly AI Coding Assistants, but if you're looking for Code Editors or AI Chatbots 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 list

  1. ShaggAi icon
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    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
     
  2. Ungate icon
     1 like

    Ungate lets you use Claude, ChatGPT, and MiniMax subscriptions in Cursor instead of paying for API tokens. Claude and ChatGPT authenticate via OAuth; MiniMax uses provider API credentials.

    Cost / License

    • Free
    • Open Source (MIT)

    Platforms

    • Cursor
     
  3. AgentOne icon
     1 like

    AgentOne is an AI agent built to help you get work done across your apps from start to finish. Tell it what you need in plain language, and it can carry out multi-step tasks on its own using the right tools and context from your connected services.

    Cost / License

    • Freemium
    • Proprietary

    Platforms

    • Mac
    • Windows
    • Linux
    • Snapcraft
     
  4. MobileCodeAI icon
     1 like

    The first AI powered SDE on iPhone. For engineers to be able to write and ship code from anywhere entirely from a phone.

    Cost / License

    • Free
    • Proprietary

    Platforms

    • iPhone
     
  5. CodeCritic icon
     1 like

    🚀 Get instant AI code reviews for free. Catch bugs, security issues & learn best practices. Supports Python, JavaScript, Go, Rust & 25+ languages. Try now!.

    Cost / License

    • Freemium
    • Proprietary

    Platforms

    • Online
     
  6. Selfcoder icon
     Like

    SelfCoder is AI coding assistant for VS Code-compatible editors, designed as a local-first alternative to GitHub Copilot. It integrates directly with local Ollama models to provide AI-powered code completion, chat, and coding assistance while keeping development workflows...

    7 Selfcoder alternatives

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Windows
    • Mac
    • Linux
     
  7. Atlarix icon
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    Atlarix is a visual AI coding copilot where architecture becomes persistent memory. Build with Blueprints, AI agents, and smart scaffolding.

    Cost / License

    • Paid
    • Proprietary

    Application type

    Platforms

    • Mac
    • Linux
     
  8. Stellify icon
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    AI-native Laravel development platform. Build full-stack Laravel/Vue apps in your browser with an AI agent that understands your entire codebase — not just the file it's looking at.

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Online
     
  9. Nimbalyst icon
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    Nimbalyst is the agent-native visual workspace for builders. Maximize speed, bandwidth, and context with Codex and Claude Code. Nimbalyst is where builders, agents, and teams collaborate visually on markdown, mockups, drawing, code, sessions, and tasks.

    5 Nimbalyst alternatives

    Cost / License

    • Free
    • Proprietary

    Platforms

    • Windows
    • Mac
    • Linux
     
  10. Aura IDE icon
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    An AI coding harness that dogfooded itself into shape: Planner/Worker agents, repo awareness, surgical edits, validation, recovery, and safe diff approvals.

    Cost / License

    • Free
    • Open Source (MIT)

    Platforms

    • Windows
     
  11. Clawme icon
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    Personal AI Assistant built for OpenClaw.

    Cost / License

    • Free
    • Proprietary

    Platforms

    • Windows
    • Mac
     
  12. BWorlds icon
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    The production team for AI-built apps. Import your app, fix what's broken, start charging, keep it running. Replaces the engineer or freelancer builders would hire.

    Cost / License

    • Freemium
    • Proprietary

    Platforms

    • Online
     
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