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AI · alternatives · 2026

24 alternatives to Codex app for Windows

Codex now runs natively on Windows with secure sandbox

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites, 1 of them free or with a free tier.

  1. 1

    OpenAI's smartest and most intuitive to use model yet

    2021 · openai.com · its alternatives →

  2. 2
    CodeX▲124

    Build webapps in minutes for completely free

    2025 · its alternatives →

  3. 3

    A web code editor with AI & multi-language support

    2025 · x-codex.vercel.app · its alternatives →

  4. 4

    The power of Codex with local, self-hosted models and voice

    Jul 2026 · opencodesuper.app · its alternatives →

  5. 5

    Open-source Computer Use MCP for AI agents

    May 2026 · github.com · its alternatives →

  6. 6

    Hey HN, I’ve built Open Codex, a fully local, open-source alternative to OpenAI’s Codex CLI. My initial plan was to fork their project and extend it. I even started doing that. But it turned out their code has several leaky abstractions, which made it hard to override core behavior cleanly. Shortly after, OpenAI introduced breaking changes. Maintaining my customizations on top became increasingly difficult. So I rewrote the whole thing from scratch using Python. My version is designed to support local LLMs. Right now, it only works with phi-4-mini (GGUF) via…

    2025 · github.com · its alternatives →

  7. 7
    Cline Desktop Appfree tier▲265

    An open-source app for open-weight models

    Sep 2026 · cline.bot · its alternatives →

  8. 8

    Parallel custom agents for complex tasks

    Mar 2026 · learn.chatgpt.com · its alternatives →

  9. 9

    Live Codex task status in your macOS menu bar

    Aug 2026 · agentmicro.cc · its alternatives →

  10. 10

    Discuss and understand your code base from within your IDE

    2022 · usecodex.com · its alternatives →

  11. 11

    Run Claude, Codex & Copilot directly in GitHub & VS Code

    Feb 2026 · github.blog · its alternatives →

  12. 12

    I've been building computer-use tools for a while, and I quietly launched this about a month ago (122 Stars on GH). I figured it was worth sharing here. Over the last few months, a lot of computer-use agents have come out: Codex, Claude Code, CUA, and others. Most of them seem to work roughly like this: 1. Take a screenshot 2. Have the model predict pixel coordinates 3. Click x,y 4. Take another screenshot 5. Repeat That works, but it's slow, expensive in tokens, and fragile. If the UI shifts a few pixels, things break. And the model still doesn't know what any element actually is. But the…

    May 2026 · github.com · its alternatives →

  13. 13

    Let Codex navigate and automate tasks in your browser

    May 2026 · learn.chatgpt.com · its alternatives →

  14. 14

    Our application security agent

    Mar 2026 · openai.com · its alternatives →

  15. 15
    CodeX▲56

    Light weight code compiler with an API

    2021 · codexweb.netlify.app · its alternatives →

  16. 16
    Codexy▲13

    Lightweight coding agent that runs in your terminal

    2025 · github.com · its alternatives →

  17. 17

    Open-source alternative to Codex & Claude Code

    May 2026 · shiori.ai · its alternatives →

  18. 18

    Codex-CLI

    2025 · its alternatives →

  19. 19

    openai-codex

    2025 · its alternatives →

  20. 20

    Run Claude, Codex & Cursor in parallel from one dashboard

    Mar 2026 · kingcode.shingoirie.com · its alternatives →

  21. 21

    Package Codex skills and app integrations as plugins

    Mar 2026 · learn.chatgpt.com · its alternatives →

  22. 22

    An open-source macOS client for Codex

    Mar 2026 · bikrambrar.com · its alternatives →

  23. 23

    I kept running into a structural problem with AI coding tools. You try one agent. It makes changes. You try another. Now you're manually diffing branches and cleaning up experimental commits. The tools are powerful, but the workflow isn’t designed for comparison. So I built Parallel Code. It runs Claude Code, Codex, and Gemini CLI natively (no API wrapper, no feature abstraction), but isolates each agent in: its own terminal its own Git worktree its own feature branch The workflow becomes: Spawn N worktrees Assign one AI agent per worktree Let them implement independently Compare diffs Merge…

    Mar 2026 · parallelcode.app · its alternatives →

  24. 24
    Orca▲89

    Your control center for parallel AI agents

    Apr 2026 · onorca.dev · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →