GOG.com - DRM-free game store, selling both new and old titles. No clients required.
htop - htop - an interactive process viewer for Unix. This is htop, an interactive process viewer for Unix systems. It is a text-mode application (for console or X terminals) and requires ncurses. Latest release: htop 2.
itch.io - An online game marketplace and community.
Atop - An advanced interactive monitor for Linux-systems to view the load on system-level and...
GnuPlot - Gnuplot is a portable command-line driven interactive data and function plotting utility.
BleachBit - When your computer is getting full, BleachBit quickly frees disk space.