OpenKeychain helps you communicate more privately and securely. It uses high-quality modern encryption to ensure that your messages can be read only by the people you send them to, others can send you messages that only you can read, and these messages can be digitally signed so the people getting them are sure who sent them. OpenKeychain is based on the well established OpenPGP standard making encryption compatible across your devices and operating systems.
"Open Garden may have found the next version the Internet"
The Financial Times
Our revolutionary peer-to-peer mesh networking technology enables communities, organizations and app developers to create resilient, people-powered networks and services, extending the reach of the Internet."
"A New Kind of Instant Messaging
With the rise of government monitoring programs, Tox provides an easy to use application that allows you to connect with friends and family without anyone else listening in. While other big-name services require you to pay for features, Tox is totally free, and comes without advertising."