Alternatives

Products that do what XCodex WASM does

Codex running in your browser. No backend.

1. 1
   Remodex▲183

   Control Codex on your iPhone

   Apr 2026 · remodex.site

2. 2
   Codex app for Windows▲145

   Codex now runs natively on Windows with secure sandbox

   Mar 2026

3. 3IB
   I built a WASI playground for running CLI binaries in the browser▲115

   2022 · runno.dev

4. 4TE
   Term.everything – Run any GUI app in the terminal▲1,094

   I made a built-from scratch Wayland Compositor to display any GUI app* in the terminal! I think there is a lot of unexplored potential in custom Wayland compositors, a lot of really cool things you can embed existing applications into! So, I started with embedding apps into the terminal because that is the easiest input/output (output is just utf-8 and I use the great `chafa` library for that, and I just read from stdin for the input). If you have any other ideas for cool Wayland compositors, let me know. I purposedly wrote 80% the app in Typescript to appeal to the most developers and…

   Sep 2025 · github.com

5. 5
   MenubarX▲483

   A powerful menu bar browser. Pin websites like Native Apps.

   2022

6. 6
   Replicas▲239

   Run Claude Code and Codex in the cloud

   Jun 2026 · replicas.dev

7. 7
   Codex​​▲247

   Discuss and understand your code base from within your IDE

   2022

8. 8MX
   My x86 emulator written in JavaScript▲765

   2013 · copy.sh

9. 9JA
   Jaws – a JavaScript to WASM ahead-of-time compiler▲290

   I've open sourced a JavaScript to WASM compiler. It's an experimental tool, but given the semantics I already implemented, I'm fairly certain I am able to eventually cover 100% of JavaScript spec. Any ideas, questions or critique welcomed! If you are interested in WASM, especially with new proposals like WASM GC or exception handling, it might be a good source of seeing these features in action - the project has a few thousand lines of hand written WAT so far.

   2024 · github.com

10. 10
    OpenCode Superapp▲128

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

    Jul 2026 · opencodesuper.app

11. 11
    Epho▲156

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

    16d ago · epho.io

12. 12
    Codex by OpenAI▲346

    A command center for working with agents

    Feb 2026

13. 13RP
    Run Python, Ruby, Node.js, C++, Lua in the Browser via x86 to WASM JIT▲171

    2021 · repl.leaningtech.com

14. 14IW
    I wrote a WebAssembly Interpreter and Toolkit in C▲105

    2023 · github.com

15. 15
    Codex in Chrome▲111

    Let Codex navigate and automate tasks in your browser

    May 2026 · learn.chatgpt.com

16. 16DI
    Docker in the browser using x86-to-WASM recompilation▲119

    2022 · copy.sh

17. 17GP
    Go playground powered by WASM that runs in the browser▲140

    2021 · go-playground-wasm.vercel.app

18. 18
    CodeX-Editor▲125

    A web code editor with AI & multi-language support

    2025

19. 19
    AgentMicro▲160

    Live Codex task status in your macOS menu bar

    Aug 2026 · agentmicro.cc

20. 20
    Runno▲148

    Make embeddable code snippets that run in the browser

    2021

21. 21WW
    Wasmino = WASM and Arduino – Running Arduino Code in Browser▲84

    2020 · blog.yifangu.com

22. 22SU
    Sandboxing untrusted code using WebAssembly▲76

    Hi everyone, I built a runtime to isolate untrusted code using wasm sandboxes. Basically, it protects your host system from problems that untrusted code can cause. We’ve had a great discussion about sandboxing in Python lately that elaborates a bit more on the problem [1]. In TypeScript, wasm integration is even more natural thanks to the close proximity between both ecosystems. The core is built in Rust. On top of that, I use WASI 0.2 via wasmtime and the component model, along with custom SDKs that keep things as idiomatic as possible. For example, in Python we have a simple decorator:…

    Feb 2026 · github.com

23. 23WR
    WebAssembly runtime embedded in Godot game engine▲32

    A WebAssembly runtime embedded in Godot game engine projects. Interact with Wasm modules from GDScript. Accessing Wasm modules via GDScript provides the following benefits. - Sandboxed environment allows safely loading zero-trust mods/extensions to a project. - Single target means that Wasm modules can be built from any language e.g. Rust, Go, AssemblyScript and the single binary can be run on all platforms. - Fast execution compared to GDScript allows for offloading compute-heavy operations or running bots/mods/etc. at high FPS. This might be useful for loading mods, bot AI,…

    2023 · github.com

24. 24
    Codex Chat▲79

    An open-source macOS client for Codex

    Mar 2026

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