File transfer between Android, iOS, Linux, macOS, and Windows
Keybase Go library, client, service, OS X, iOS, Android, Electron
A free (libre) open source, mobile OS for Ethereum
Berty is a secure peer-to-peer messaging app
Encrypted remote command terminal and file transfer app
Synchronize secrets between PCSecrets and Secrets for Android
BluNet is a Bluetooth Messaging Application for Android devices
bluetooth mesh chat, IRC vibes
Microsoft project for cloud-based client-server communication
Home grown, community messaging platform
Secured blockchain group messaging
Android Telnet SDK bases on Putty Telnet library
Android SNMP SDK for SNMP agent/manager
Android application for sending sms with a little help of QR codes.