Zello - Zello's push-to-talk app redefines the walkie talkie. It's a great push-to-talk over cellular (PoC) alternative for businesses and organizations. Learn more about the best walkie talkie app in the market.

Chatib - Chatib is an online chat room where you can meet and chat with new people, make them friends, or even data them online.

NuovoTeam - NuovoTeam Push-to-Talk (PTT) App for Frontline Workforce.

Chatingar - Chatingar.com is free chat rooms for online chat and connections worldwide. Find your perfect match and chat instantly!

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

Element.io - Secure messaging app with strong end-to-end encryption, advanced group chat privacy settings, secure video calls for teams, encrypted communication using Matrix open network. Riot.im is now Element.