Zello

Zello is a push-to-talk communication app that turns phones, tablets and computers into radio-style walkie-talkies for frontline teams. Workers press a button to talk instantly to one person or a whole channel, and audio plays in real time. The company's newer Zello AI listens to those conversations, offers live voice translation, and provides transcripts and searchable message history.

Zello runs on iOS, Android, Windows and Mac and works with earpieces, buttons and speaker mics, so teams can use company or personal devices. It can run in the cloud over Wi-Fi or cellular, or be deployed on-premise through Zello Enterprise Server. Its headquarters are at 1717 West 6th Street in Austin, Texas, and the company works with industries such as aviation, retail, construction and emergency response, and offers its app free to first responders.