Virola Messenger

An open-source, secure, fully customizable communications platform for team collaboration and messaging.

LiveKit is an open source, scalable WebRTC media server for building real-time video, audio, and data experiences.

Mattermost is a self-hosted collaboration platform for chat, workflow automation, voice calling, screen sharing, and AI integration.

Tinode is a full-stack instant messaging server with native clients for web, Android, iOS, and command-line use.

screego/server is a screen-sharing server for developers that provides high-quality, low-latency screen sharing.

A private messaging platform with no user identifiers, offering encrypted chat, groups, and calls across mobile and terminal apps.

Live Helper Chat is an open-source live support and customer chat application for websites.

Chatto is a self-hostable chat application for teams and communities, with a bundled web frontend, server, CLI, and related identity/workflow components.

Databag is a federated messenger for self-hosting.

FusionPBX is a web-based multi-tenant PBX and VoIP server platform built on FreeSWITCH for business telephony, call center, voicemail, fax, and conferencing use cases.

WorkAdventure is an open-source platform for creating customizable collaborative virtual worlds and virtual offices with avatar-based interaction and video chat.

Platform for your corporate communications, based on the advanced architecture, with support for UltraHD video conferencing, built-in messenger with personal and group chats, and a free version for up to 1,000 users.