Alternatives

Products that do what CodeX 2.0 does

The modern cloud code editor with zero setup & built-in AI.

1. 1
   Codex by OpenAI▲955

   AI that writes code for you

   2021 · openai.com

2. 2
   CodeX-Editor▲125

   A web code editor with AI & multi-language support

   2025

3. 3
   Codex by OpenAI▲346

   A command center for working with agents

   Feb 2026

4. 4
   Codex by ChatGPT▲401

   Cloud agent for parallel dev tasks, powered by Codex-1

   2025

5. 5
   Codex​​▲247

   Discuss and understand your code base from within your IDE

   2022

6. 6
   CodeX▲124

   Build webapps in minutes for completely free

   2025

7. 7
   GPT-5 Codex▲358

   A version of GPT-5 better at agentic coding

   Sep 2025

8. 8
   Codex app for Windows▲145

   Codex now runs natively on Windows with secure sandbox

   Mar 2026 · learn.chatgpt.com

9. 9
   GPT‑5.3‑Codex‑Spark▲277

   An ultra-fast model for real-time coding in Codex

   Feb 2026 · openai.com

10. 10
    CodeX by Supernova▲216

    Convert designs into production-ready code in real-time

    2018

11. 11
    Replicas▲239

    Run Claude Code and Codex in the cloud

    Jun 2026 · replicas.dev

12. 12
    Codex Subagents▲306

    Parallel custom agents for complex tasks

    Mar 2026 · learn.chatgpt.com

13. 13
    OpenCode Superapp▲128

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

    Jul 2026 · opencodesuper.app

14. 14
    Superset▲542

    Run an army of Claude Code, Codex, etc. on your machine

    Feb 2026 · superset.sh

15. 15
    Kodezi 2.0▲477

    Grammarly for programmers

    2023

16. 16
    Boxes.dev▲112

    Run Claude Code and Codex in your own cloud environment

    Jun 2026 · boxes.dev

17. 17
    Muse Code▲240

    Meta’s terminal agent for long-horizon coding

    Aug 2026 · research.meta.ai

18. 18
    GitHub Agent HQ▲192

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

    Feb 2026

19. 19
    ShioriCode▲119

    Open-source alternative to Codex & Claude Code

    May 2026 · shiori.ai

20. 20
    Kilo Code for VS Code ▲347

    Open-source, lightning speed autonomous AI coding agent

    2025

21. 21
    Codex Security▲306

    Our application security agent

    Mar 2026 · openai.com

22. 22
    Epho▲156

    Run Claude Code, Codex or Opencode in cloud with your repo

    17d ago · epho.io

23. 23OC
    Open Codex – OpenAI Codex CLI with open-source LLMs▲106

    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

24. 24
    Codex in Chrome▲111

    Let Codex navigate and automate tasks in your browser

    May 2026 · learn.chatgpt.com

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