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.
GetLavado - Lava la ropa desde tu celular
ChatSecure - ChatSecure is a free and open source messaging app that features OTR encryption over XMPP.
airfocus - The first modular product management platform: Discover, learn, plan and deliver - your way.
Keybase Chat - End-to-end encrypted chat built into Keybase
PromoCodius - PromoCodius is an online service that collects and offers coupons, deals and discounts for thousands of well-known retailers around the Globe.