Internet CEO Me says its “terrible to have datacenters have a bunch of the world’s limited supply of DRAM” instead of shoving it all to everybody

Some additions to what your post and the other comments listed:

• Systemd (including init system and service management)
• Freedesktop software (including Wayland and Xorg)
• Freedesktop specifications or Freedesktop specification repository (including filesystem hierarchy and D-Bus)
• Python (as an addition to C and Bash, as this is standard in Linux)
• Git (including git command and Github)