Encrypt your VoIP calls to stop people listening in on your conversations Do you hate it when people listen in on your conversations? We don't like it either. That's why we offer free encryption of all text, voice, and video communications with TLS/SRTP or ZRTP. Our VoIP softphone will search everywhere for your contacts, and display them in a combined list to make it easy to access. Outlook, windows/mac. LDAP. XMPP. XCAP. Android. iOS. We can handle it all. We will also look up incoming calls so you know who called before you answer. Zoiper can be used on many different platforms. It doesn't matter if you use Windows, Linux, or macOS. We have a solution for you, whether you're using iOS, Android, or a browser. And we're constantly adding more. It's not a buzzword, it simply means that we can do Audio, Video Fax, Presence, Instant Messaging, and Fax. All this from one intuitive interface.