Zendo makes mobile messaging conversations as private and natural as conversations with your friends "in real life." You exchange Zendo keys in person with your friends. That way, nobody else ever has the keys, so nobody else can read your messages.
Zendo is a mobile messaging app that ensures private communications between users (text messages and photos for now, with more formats on the way). You exchange encryption keys in person, so it is like a digital handshake - an exchange of trust and friendship.
"Peer-to-peer encrypted messaging and forums
Messages are stored securely on your device, not in the cloud
Connect directly with nearby contacts - no Internet access required Free and open source software"
"Haven is for people who need a way to protect their personal spaces and possessions without compromising their own privacy. It is an Android application that leverages on-device sensors to provide monitoring and protection of physical spaces. Haven turns any Android phone into a motion, sound, vibration and light detector, watching for unexpected guests and unwanted intruders. We designed Haven for investigative journalists, human rights defenders, and people at risk of forced disappearance to create a new kind of herd immunity. By combining the array of sensors found in any smartphone, with the world's most secure communications technologies, like Signal and Tor, Haven prevents the worst kind of people from silencing citizens without getting caught in the act."
"Hide your information and surf the Internet without a trace.
Enjoy the pleasure of protection with VPNhub. With full data encryption and guaranteed anonymity, go with the most trusted VPN to protect your privacy anywhere in the world."
"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."