Mattermost is described as 'Self-hosted platform for chat, workflow automation, voice calls, screen sharing, AI-powered features, third-party integrations, and team messaging' and is a very popular Group Chat app in the social & communications category. There are more than 100 alternatives to Mattermost for a variety of platforms, including Web-based, Android, iPhone, Windows and Mac apps. The best Mattermost alternative is Element. It's not free, so if you're looking for a free alternative, you could try Element or Discord. Other great apps like Mattermost are Stoat Chat, Slack, Zulip and Element X.
LeggoChat is a group or channel based chat platform that is designed to be easy to set up for any casual, or formal settings and discussions. Users can choose to have their messages logged and stored, or otherwise. No user accounts are required to get started at all.
P2 is a flexible platform for teams to share, discuss, and collaborate openly and without interruption. It helps closed communication become more transparent and rich vs. restricted documents or email. P2 is built with WordPress & Gutenberg.
Twake Chat is a secure, open source messaging platform designed for enterprises. It offers seamless integration of chat, video conferencing, file sharing, and email, and more.
Fuse Chat is a Video Chat script userfriendly php socket.io script With is fully responsive design whatever if you are using a mobile a computer or even a tablet will always fit your screen and give you the best chat experience possible.
Fast open source Slack desktop app, written in Node.js with native UI powered by the Yue library.
Self-hostable open-source chat solution offering text, voice, and video with fine-grained roles, forum threads, DM workspace, browser soundboard, custom emoji, PWA offline support, push notifications, analytics tools, and advanced moderation capabilities.
Brand your online video calls, meetings, and conference room in seconds. All done in the browser. No download and installation required. FREE for 2 months!.
uShare.to is a communication app for "extended" teams. Bring together teammates, clients and partners together in instant workspaces for video and audio conferencing, chat, mobile messaging and sharing information.
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