ChatSecure - ChatSecure is a free and open source messaging app that features OTR encryption over XMPP.
Asana - Asana project management is an effort to re-imagine how we work together, through modern productivity software. Fast and versatile, Asana helps individuals and groups get more done.
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.
Flow - Stop managing projects from your inbox.
ChatIW - Meet and Chat with new friends around the world.
teamcheck - Daily planner for creative teams