2008-2021 YouTube Theme - CustomTube
Old DeviantArt Theme - DeviantArt V7
Old Roblox theme - ROBLOX 2012
Windows 7 theme for Windows 10 - Aero10
Gplex - 2011-2018 Google theme
2014 Google theme (Pretty broken but works on some Google products like Google Drive)
Old Google home pages (Use with custom new tab extension)
Play and make ROBLOX games with real old clients - Novetus
Music - FL Studio 10 (and 20+21)