A glossy Matrix collaboration client for the web
Franz is a free messaging app for services like WhatsApp, Slack, etc,
Free and Open Source messaging and emailing app
Desktop client for Facebook Messenger
Simple PHP/Ajax Chat
WebRTC complete web based Party Line Voice Chat Script
MT-CHAT Free php chat application for your website.
Free social network.
One Web Forum is tool for expressing your free speech in todays world
free chat system