Code

GEISS Screensaver and Winamp plug-in official page, github

ZX Spectrum Remakes by SteveSmith16384 Manic Miner Destruction with physics, Exolon 3D, Jet Pac multiplier, github

digger.org Digger game by Windmill Software created in 1983, source code

UltraCompressor II UC2 compresses 10-50% better than PKZIP, source code

Far Manager Far manager, source code, github

Youtube

3Blue1Brown mathematics tutorials and animations youtube channel

Physics videos by Eugene Khutoryansky youtube channel