OpenCodex is a middleware layer for Codex Desktop. It lets you use a phone, tablet, or another computer to access and operate Codex on a target machine through a browser, making it suitable for continuous AI Coding in LAN or remote LAN environments.
Features
- Access Codex on the target machine through a browser, with no proxy network or extra account requirements, and support for phones, tablets, computers, and other devices.
- Native Codex experience.
- Supports local access, LAN access, and remote LAN access with Tailscale / ZeroTier / VPN.
- Supports setting an access password to avoid unauthenticated exposure.
- Provides a launcher for visual configuration of the listen address, port, access password, and more.
- Automatically updates to the local Codex Desktop version on startup, keeping compatibility with new-version features.
- Provides optimizations for mobile devices.
Publisher’s description
What is OpenCodex?
OpenCodex by OpenAI is open-source Windows software in the ai assistants & llms category. It is written in JavaScript.
Installation and requirements
The publisher provides EXE (NSIS) installers for 64-bit Windows. It can be installed for the current user only, without administrator rights. A silent install is possible with the installer’s documented switches.
Updates and version history
The current version is 2.1.0, released on September 13, 2026. The version history goes back to June 17, 2026: 4 releases, all linked to the official files.
Popularity and file types
The source code on GitHub (RyensX/OpenCodex) has 723 stars. Similar programs include Codex CLI, Claude Code and ChatGPT.
Project description on GitHub: “OpenCodex is a middleware layer for Codex/ChatGPT Desktop. It lets you use a phone, tablet, or another computer to access and operate Codex on a target machine through a browser, making it suitable for continuous AI Coding in LAN or remote LAN environments.”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Documented silent install
- Installs without administrator rights
- Updated in the last two months
Cons
- No native ARM64 build
In short: OpenCodex is an open-source ai assistants & llm tool for 64-bit PCs. Administrators can deploy it unattended.
Is OpenCodex safe to download?
- The file is served by github.com, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
2A910AFF1D359CEC2BF16545AC0C593F24D134805BF60EC73C35E97754043593· Open the VirusTotal report for this hash - The link has not been checked yet
- The source code is public
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 4 versions ›| Version | Date | Size | Files |
|---|---|---|---|
| 2.1.0Latest | September 13, 2026 | — | 64-bit EXE (NSIS)64-bit EXE (NSIS) |
| 2.0.3 | July 31, 2026 | — | 64-bit EXE (NSIS)64-bit EXE (NSIS) |
| 2.0.2 | July 10, 2026 | — | 64-bit EXE (NSIS)64-bit EXE (NSIS) |
| 2.0.1 | June 17, 2026 | — | 64-bit EXE (NSIS)64-bit EXE (NSIS) |
Install from the command line
Silent install ›winget install --id RyensX.OpenCodex -eOpenCodex.Setup.2.1.0.exe /SRelated guide: How to use winget: install and update apps
Information
- Publisher
- OpenAI
- Category
- AI assistants & LLMs
- Licence
- AGPL-3.0
- Price
- Free
- Source code
- github.com/RyensX/OpenCodex
- Written in
- JavaScript
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- EXE (NSIS)
- Version
- 2.1.0
- Released
- September 13, 2026
- Added to the catalogue
- July 2, 2026
- Versions listed
- 4
- GitHub stars
- 723
- GitHub forks
- 75
- Website
- github.com
- winget ID
- RyensX.OpenCodex
Ratings and reviews
No reviews yet. Be the first to rate it.
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Frequently asked questions
Is OpenCodex free?
Yes. OpenCodex is open-source software under the AGPL-3.0 licence.
Is OpenCodex safe to download?
The download comes from github.com, which belongs to the publisher; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install OpenCodex with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Can OpenCodex be installed silently?
Yes. The silent install page lists the exact command for each installer.
Does OpenCodex run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit version through emulation.
Where can I download an older version of OpenCodex?
The versions page lists all 4 versions with links to their official installer files, back to June 17, 2026.
Can I use OpenCodex without administrator rights?
Yes, there is a per-user installer that does not need administrator rights.
What are alternatives to OpenCodex?
Codex CLI, Claude Code, ChatGPT, GPT4All and Jan. The alternatives page compares them.
