pavroo 
Web site: github.com/toxygen-project/toxygen Category: Network Subcategory: Instant Messengers Platform: Linux, Windows License: GPL Interface: GUI First release: March 2016 Toxygen – a powerful cross-platform Tox client written in pure Python3 with a lot of unique features such as plugins and faux offline file transfers. Features: – 1v1 messages – File transfers – Audio calls – … Read more
Web site: github.com/uTox/uTox Category: Network Subcategory: Instant Messengers Platform: Android, BSD, Linux, OS X, Windows License: MIT Interface: GUI First release: 2017 μTox – a lightweight TOX client with full support for chat, file transfers, audio/video calling, and desktop sharing (both as video and inline screenshots). It also supports text group chats with audio groups … Read more
Web site: jami.net Category: Network Subcategory: Instant Messengers, VoIP Clients Platform: Android, iOS, Linux, OS X, Windows License: GPL Interface: GUI First release: November 2018 Jami (previously: Ring and SFLphone) – a free software for universal communication which respects the freedoms and privacy of its users. Jami is completely peer-to-peer and doesn’t require a server … Read more
Web site: qtox.github.io Category: Network Subcategory: Instant Messengers Platform: BSD, Linux, OS X, Windows License: GPL Interface: GUI First release: March 2010 qTox – a chat, voice, video, and file transfer instant messaging client using the encrypted peer-to-peer Tox protocol. Tox is a peer-to-peer instant-messaging and video-calling protocol that offers end-to-end encryption. qTox provides an … Read more
Web site: jitsi.org Category: Network Subcategory: Instant Messengers, VoIP, Video conference Platform: Android, iOS, Linux, OS X, Windows License: Apache 2.0 Interface: GUI First release: 2003 Jitsi (previously: SIP Communicator) – a set of open-source projects that allows you to easily build and deploy secure video conferencing solutions. At the heart of Jitsi are Jitsi … Read more