Developer Mayuki has introduced ReProgman, a homage to the classic Windows 3.1 Program Manager ('progman.exe'). The application captures the essence of its predecessor and was created by Claude Code within an hour. The initial version is lightweight, ranging from 12 to 16MB, and requires the .NET SDK 10.0 or higher to build and run. The source code is available on GitHub under the MIT license. Some enthusiasts prefer the authentic experience of running MS-DOS and Windows 3.1 on vintage hardware, with recent demonstrations showing the capability to run Windows 3.1X on modern hardware.