TongTong, an internal messenger platform of the Tomato group, is a P2P-based messenger platform that does not store messages on the server. The TongTong messenger platform is a P2P (peer-to-peer network) platform that simply relays user conversations without storing them on the server. TongTong messenger uses the method of direct communication between devices, and all use conversation is encrypted/decrypted with user’s private key. Therefore, it is impossible to intercept communication section and check contents of talk on the server. TongTong will be a user-friendly messenger platform. All users can easily join with a phone number. It allows both 1:1 conversations and group conversations!