ReProgman Archives

Winsage

September 11, 2026

ReProgman – The Windows 3.1 interface on PC and Mac

Developer Mayuki Sawatari has created ReProgman, a modern homage to the Windows 3.1 Program Manager, which operates on both Windows 11 and macOS. The application mimics the early '90s interface, scanning the Start menu on Windows or the Applications folder on Mac to organize programs into groups without altering actual shortcuts. Users can drag and drop icons, utilize classic window arrangements, and experience a recreated exit dialog box. The project was initially developed in just an hour, with a detailed specification document available in its git repository. ReProgman is released under the MIT license and is available as a standalone binary, though Mac users need to adjust permissions to run it. Currently, it supports only Windows 11 on x64 and Arm architectures and macOS on Apple Silicon, excluding Windows 10 and Intel Macs.

Winsage

September 10, 2026

Developer uses Claude to vibe code a Windows 3.1 shell in an hour — reanimated 12MB retro launcher runs on both Windows 11 and Apple Silicon

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.