98.css – A design system for building faithful recreations of old UIs

https://github.com/anthmn/hackertosh.css

https://github.com/AlexBSoft/win95.css

https://github.com/1j01/os-gui

https://github.com/themesberg/windows-95-ui-kit

https://github.com/andersevenrud/retro-css-shell-demo

https://github.com/arturbien/React95

https://github.com/botoxparty/XP.css

https://github.com/Gioni06/terminal.css

https://github.com/jdan/98.css

https://github.com/jianzhongli/csswin10

https://github.com/khang-nd/7.css

https://github.com/kristopolous/BOOTSTRA.386

https://github.com/lachsfilet/Renkbench

https://github.com/lolstring/window98-html-css-js

https://github.com/micah5/PSone.css

https://github.com/nostalgic-css/NES.css

https://github.com/npjg/classic.css

https://github.com/robbiebyrd/platinum

https://github.com/bryanbraun/after-dark-css

https://github.com/npjg/new-dawn

https://github.com/ritenv/retro-desktop

https://github.com/RoelN/c64css3

https://github.com/sakofchit/system.css

https://github.com/vinibiavatti1/TuiCss

https://code.divshot.com/geo-bootstrap/

https://github.com/anthmn/hackertosh.css

https://github.com/AlexBSoft/win95.css

https://github.com/1j01/os-gui

https://github.com/themesberg/windows-95-ui-kit

https://github.com/andersevenrud/retro-css-shell-demo

https://github.com/arturbien/React95

https://github.com/botoxparty/XP.css

https://github.com/Gioni06/terminal.css

https://github.com/jdan/98.css

https://github.com/jianzhongli/csswin10

https://github.com/khang-nd/7.css

https://github.com/kristopolous/BOOTSTRA.386

https://github.com/lachsfilet/Renkbench

https://github.com/lolstring/window98-html-css-js

https://github.com/micah5/PSone.css

https://github.com/nostalgic-css/NES.css

https://github.com/npjg/classic.css

https://github.com/robbiebyrd/platinum

https://github.com/bryanbraun/after-dark-css

https://github.com/npjg/new-dawn

https://github.com/ritenv/retro-desktop

https://github.com/RoelN/c64css3

https://github.com/sakofchit/system.css

https://github.com/vinibiavatti1/TuiCss

https://code.divshot.com/geo-bootstrap/

Cool!

Can someone please collect this into a github page so I can find it again in the future?

I know I'm being lazy and should do it myself, but I'd rather someone with more visibility do it.

[EDIT: Added the actual list to my comment so I can find it again in the future]