I have been seing a lot of projects on GitHub lately, for modern web development/.net core cross platform development/etc, but with retro look and feel. I didn't write any of these and am not affiliated with any of these projects in any way, and hopefully these aren't already tracked in another post; but thought I would list a couple that caught my eye. Would love to see any projects like this that you guys have seen.

React95 - A React components library with Win95 UI
https://github.com/React95/React95

Gui.cs - terminal toolkit for .net
https://github.com/migueldeicaza/gui.cs

winXP - web based Windows XP desktop recreation
https://github.com/ShizukuIchi/winXP
https://winxp.now.sh

GitHub XP - chrome extension to style GitHub as Windows XP
https://github.com/martenbjork/github-xp

Windows95 - windows 95 running in Electron
https://github.com/felixrieseberg/windows95