Zello

Zello develops real-time push-to-talk (PTT) voice communication software for the frontline and deskless workforce, turning smartphones, tablets, and computers into instant walkie-talkies. The engineering work spans real-time voice communication, push-to-talk technology, AI-powered voice intelligence, speech and voice translation, radio gateway integration, SDK development, and cross-platform mobile and desktop builds. The company is headquartered in Austin, Texas.

The Zello Push-to-Talk Platform delivers crystal-clear voice over Wi-Fi and cellular networks on iOS, Android, Windows, and Mac. It includes live voice translation, message replay, radio gateways, and SDKs for integration into third-party systems. The platform carries over 10 billion messages a month across more than 200 countries. Alongside it, Ella AI Assistant converts everyday voice conversations into operational insights for frontline teams.

Zello's software is used in construction, retail, aviation, and emergency response, among other sectors. The company provides its complete enterprise solution free of charge to more than 3,000 emergency organisations worldwide. Its stated focus is on deskless and frontline workers, a group it describes as representing 80% of the global workforce and often overlooked by technology development.