gTok

This software is a peer-to-peer communication software with some focus on 3D file sharing. Users can add friends, create group, send chats, files, and make audio/video calls. This software uses TOX protocol to facilitate point to point communication without web servers or data servers. It has a built-in 3D file viewer for STL and PLY files.

The Tox protocol is a decentralized, peer-to-peer, encrypted communication protocol designed for secure instant messaging, voice, and video calling. It aims to provide a secure and privacy-focused alternative to centralized messaging platforms. It does not use any server or third party services, so all the communication texts and files are not visible to any third party or saved at any third party's computers.