itch.io - An online game marketplace and community.
Mumble - Mumble is an open source, low-latency, high quality voice chat software primarily intended for use...
GOG.com - DRM-free game store, selling both new and old titles. No clients required.
Bigfoot - Bigfoot is a gaming assistant for mobile gamers that provides them with various useful tools to enhance their gaming experience.
Ubisoft Club - Ubisoft Club app enables you to get updates about your favorite games timely.
Element.io - Secure messaging app with strong end-to-end encryption, advanced group chat privacy settings, secure video calls for teams, encrypted communication using Matrix open network. Riot.im is now Element.