OpenAI Codex AlternativesAI Coding Assistants and other similar apps like OpenAI Codex

OpenAI Codex is described as 'Codex is OpenAI’s series of AI coding tools that help developers move faster by delegating tasks to powerful cloud and local coding agents' and is a ai coding assistant in the development category. There are more than 50 alternatives to OpenAI Codex for a variety of platforms, including Mac, Windows, Linux, Web-based and Visual Studio Code apps. The best OpenAI Codex alternative is Windsurf Editor, which is free. Other great apps like OpenAI Codex are Cursor, Void, Mellum and TabbyML.

OpenAI Codex iconOpenAI Codex
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Codex is OpenAI’s series of AI coding tools that help developers move faster by delegating tasks to powerful cloud and...

More about OpenAI Codex
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OpenAI Codex alternatives page was last updated Jun 25, 2025
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  1. Windsurf Editor icon

    Windsurf Editor

     32 likes
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    Windsurf Editor is an IDE merging AI and developers for lockstep collaboration with Cascade capabilities, boosting speed and contextual coding through copilot and agent-like systems across Mac, Windows, and Linux.

    47 Windsurf Editor alternatives

    License model

    • Freemium • Proprietary

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Linux
    Windsurf Editor screenshot 1

    Windsurf Editor Features

    1.  AI-Powered
    2.  Built-in AI Assistant
    3.  Context-aware help
    4.  Built-in Browser

    Windsurf Editor VS OpenAI Codex

     

    • Windsurf Editor is the most popular Windows, Mac & Linux alternative to OpenAI Codex.

    • Windsurf Editor is the most popular free alternative to OpenAI Codex.

    • Windsurf Editor is Freemium and ProprietaryOpenAI Codex is Paid and Proprietary
  2. Cursor icon

    Cursor

     34 likes
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    The AI-first Code Editor. Build software faster in an editor designed for pair-programming with AI.

    78 Cursor alternatives

    License model

    • Freemium • Proprietary

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Linux
    Cursor screenshot 1

    Cursor Features

    1. Git icon  Git Support
    2.  Extensible by Plugins/Extensions
    3.  Code Formatting
    4.  Syntax Highlighting
    5.  Autocompletion
    6.  Dark Mode
    7.  AI-Powered

    Cursor VS OpenAI Codex

     
  4. Void icon

    Void

     20 likes
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    The open source AI code editor. Write code with the best AI tools, use any model, and retain full control over your data.

    62 Void alternatives

    License model

    • Free • Open Source

    Application types

    Country of Origin

    • International

    Platforms

    • Mac
    • Windows
    • Linux
    Void screenshot 1

    Properties

    1.  Privacy focused

    Features

    1.  No Tracking
    2.  AI-Powered
    3.  Ad-free
    4. ChatGPT icon  ChatGPT integration
    5.  Works Offline
    6.  Autocompletion
    7.  Syntax Highlighting
    8.  No registration required
    9.  Full-Text Search
    10.  VSCode
    11.  Third party integrations

    Void VS OpenAI Codex

     

    • Void is the most popular Open Source alternative to OpenAI Codex.

    • Void is Free and Open SourceOpenAI Codex is Paid and Proprietary
    • Void is Privacy focusedOpenAI Codex is not according to our users
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  6. Mellum icon

    Mellum

     15 likes
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    Mellum-4b-base is JetBrains' first open-source large language model (LLM) optimized for code-related tasks.

    36 Mellum alternatives

    License model

    • Free • Open Source

    Application types

    Country of Origin

    • CZ flagCzechia
    • European Union flagEU

    Platforms

    • Self-Hosted
    • Python
    Mellum screenshot 1

    Mellum Features

    1.  AI-Powered

    Mellum VS OpenAI Codex

     

    • Mellum is the most popular Self-Hosted alternative to OpenAI Codex.

    • Mellum is Free and Open SourceOpenAI Codex is Paid and Proprietary
  7. TabbyML icon

    TabbyML

     20 likes
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    Tabby is an open-source, self-hosted AI coding assistant. With Tabby, every team can set up its own LLM-powered code completion server with ease.

    66 TabbyML alternatives

    License model

    • Free • Open Source

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Linux
    • Self-Hosted
    • Visual Studio Code
    TabbyML screenshot 1

    TabbyML Features

    1.  Syntax Highlighting

    TabbyML VS OpenAI Codex

     
  8. Firebase Studio icon

    Firebase Studio

     16 likes
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    A cloud-based, agentic development environment designed to accelerate how you build, test, deploy and run production-quality AI applications, all in one place.

    40 Firebase Studio alternatives

    License model

    • Freemium • Proprietary

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Online
    Firebase Studio screenshot 1

    Top Firebase Studio Features

    1.  Code Formatting
    2.  Dark Mode
    3.  Extensible by Plugins/Extensions
    4. LaTeX icon  Support for LaTeX
    5. Git icon  Git Support
    6.  Autocompletion
    7.  Live Preview
    8.  Support for MarkDown
    9.  Batch Editing
    10.  Syntax Highlighting
    11.  Spell Checking
    12. Bitbucket icon  Bitbucket Integration

    Firebase Studio VS OpenAI Codex

     

    • Firebase Studio is the most popular Web-based alternative to OpenAI Codex.

    • Firebase Studio is Freemium and ProprietaryOpenAI Codex is Paid and Proprietary
  10. Claude Code icon

    Claude Code

     12 likes
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    Transform hours of debugging into seconds with a single command. Experience coding at thought-speed with Claude's AI that understands your entire codebase—no more context switching, just breakthrough results.

    58 Claude Code alternatives

    License model

    Application type

    Country of Origin

    • US flagUnited States

    Platforms

    • Self-Hosted
    • Node.JS
    • npm
    Claude Code screenshot 1

    Claude Code Features

    1.  AI-Powered
    2.  VSCode

    Claude Code VS OpenAI Codex

     

    • Claude Code is the most popular commercial alternative to OpenAI Codex.

    • Claude Code is Paid and ProprietaryOpenAI Codex is also Paid and Proprietary
  11. GitHub Copilot icon

    GitHub Copilot

     31 likes
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    GitHub Copilot leverages the power of OpenAI Codex to provide real-time suggestions for code and complete functions, all within your editor. With its training on vast amounts of code, GitHub Copilot translates natural language prompts into coding suggestions across multiple...

    77 GitHub Copilot alternatives

    License model

    • Freemium • Proprietary

    Application type

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Linux
    • Visual Studio Code
    • Neovim
    • Microsoft Visual Studio
    GitHub Copilot screenshot 1

    GitHub Copilot Features

    1.  Code generation
    2.  Integrated Chat
    3.  Autocompletion
    4.  AI-Powered
    5.  Ad-free
    6.  Code Completion
    7.  Natural Language Processing
    8.  OpenAI integration

    GitHub Copilot VS OpenAI Codex

     
  12. Privy Coding Assistant icon

    Privy Coding Assistant

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

    License model

    • Free • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • Visual Studio Code
    Privy Coding Assistant screenshot 1

    Privy Coding Assistant Features

    1.  Autocompletion
    2.  Dark Mode
    3.  Ad-free
    4.  AI-Powered
    5.  VSCode

    Privy Coding Assistant VS OpenAI Codex

     
  13. Gemini CLI icon

    Gemini CLI

     9 likes
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    Free and open source, Gemini CLI brings Gemini directly into developers’ terminals — with unmatched access for individuals.

    30 Gemini CLI alternatives

    License model

    • Free • Open Source

    Application type

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Linux
    • Windows
    Gemini CLI screenshot 1

    Gemini CLI Features

    1.  Command line interface
    2.  Support for scripting
    3.  Context-aware help
    4.  Shell integration
    5.  Code generation
    6.  Terminal-based

    Gemini CLI VS OpenAI Codex

     
  14. v0 by Vercel icon

    v0 by Vercel

     7 likes
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    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.

    28 v0 by Vercel alternatives

    License model

    • Freemium • Proprietary

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Online
    • Software as a Service (SaaS)
    v0 by Vercel screenshot 1

    v0 by Vercel Features

    1.  Live Preview
    2.  Dark Mode
    3.  Ad-free
    4.  AI-Powered
    5.  Code generation
    6.  React
    7.  Natural Language Processing

    v0 by Vercel VS OpenAI Codex

     

    • v0 by Vercel is the most popular SaaS alternative to OpenAI Codex.

    • v0 by Vercel is Freemium and ProprietaryOpenAI Codex is Paid and Proprietary
  15. Rivet AI icon

    Rivet AI

     12 likes
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    Visual AI programming platform with a graphical interface for creating, editing, and debugging LLM agent workflows, supporting real-time collaboration, YAML-based version control, open-source TypeScript library integration, and scalable deployment in production environments.

    70 Rivet AI alternatives

    License model

    • Free • Open Source

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Linux
    Rivet AI screenshot 1

    Rivet AI Features

    1.  AI-Powered

    Rivet AI VS OpenAI Codex

     
12 of 58 OpenAI Codex alternatives