GNOME Apps
Linux software distribution
Linux Die.net
Linux apps
Browse Latest | https://www.linux-apps.com/browse/ | A community for free and open source software and libre content
FlatHub - Linux apps
Find and install hundreds of apps and games for Linux. Enjoy GIMP, GNU Octave, Spotify, Steam and many more!
pling.com
A community where developers and artists share applications, themes and other content
Vangrant Boxes - Vagrant Cloud