Millennium is an open-source low-code modding framework to create, manage and use themes/plugins for the desktop Steam Client without any low-level internal interaction or overhead.
If you enjoy this tool, please consider starring the project ⭐
millennium.mp4
Install Millennium for Windows. See this page for a more detailed guide.
For normal users, installing via the installers makes the most sense. However when wanting to either develop Millennium, or when the installers do not work, this option can be used. Check our wiki for a guide on how to do this.
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- JavaScript (React) frontend container in Steam
- Python backend container in usermode
- Foreign function interface binding from Python to JavaScript and vice versa
- Hook modules in the Steam web browser
- Overwrite/Modify HTTP requests
- Load custom JavaScript (Native) into web browser
- Load custom StyleSheets into web browser
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- Manage and load custom user themes into Steam
- Manage custom plugins into Steam
- Manage theme & plugin updates.
Millennium currently only supports standard Windows NT builds. This includes ARM based processors and x86 based processors. Linux and Mac are NOT currently supported BUT support is currently in development for linux. For a more details see our wiki
Supported Platforms:
- Windows 10 and newer
- Windows (x86/x64/ARM) NT
- Linux (WIP, Learn more)
