Meeto

Using Meeto, you can communicate instantly while avoiding SMS fees, create groups so that you can chat in real time with all your friends at once, and share media or attachments all with complete privacy. The server never has access to any of your communication and never stores any of your data.
Using Meeto, messages are instantly delivered to friends. Make phone calls to people who live across town, or across the ocean, with no long-distance charges. Meeto allows you to create encrypted groups so you can have private conversations with all your friends at once. Not only are the messages encrypted, but the Meeto server never has access to any group metadata such as the membership list, group title, or group icon.