Telegram Desktop messaging app
Home to the Signal Protocol and other cryptographic primitives
A free (libre) open source, mobile OS for Ethereum
A Decentralized, Onion Routed, Private Messenger
A New Kind of Instant Messaging
LXMF client for Android, Linux and macOS to communicate with people
Private messenger for Windows, Mac, and Linux
You can message and share files inside your intranet without a server.
Chat Messenger. E-Mail-Client. Websearch. Filetransfer.
Secure communication software
minimalistic, secure and autonomous P2P messenger
A P2P Messenger which uses JXTA. It provides secure RSA/AES end-to-end