Zello is a push-to-talk (PTT) voice communication platform that operates over the internet. It enables users to transform their devices into walkie-talkies, allowing real-time voice communication across various locations. The service is widely used for both personal and professional purposes, including in industries such as transportation, hospitality, and emergency services. Zello supports live voice transmission over cellular or Wi-Fi networks and offers features such as one-to-one or group communication, text messaging, and photo sharing. The platform is available on multiple devices, including smartphones and computers.