pttdroid

pttdroid is a Push To Talk VoIP app which can be used in Wi-Fi networks.

LINE

LINE is a Japanese proprietary application for instant messaging on smartphones and PCs.

Phoner provides business owner, sales people, lawyers, doctors, police officers and others with a…

Talk with your favorite people, walkie-talkie style

A Self-Aware, Digital Assistant that Protects Your Messages

One-tap moment-sharing

Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.

Turn your smart phone into the ultimate push to talk walkie-talkie with TiKL.

Tinode Instant Messaging

Turn your phone into a Walkie Talkie. Don’t waste time on phone calls and voicemails.

Indie Chat / Messenger for Android

WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.

Wowapp is the best alternative to Skype and you will get paid to use it!

Powerful open source group chat