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.
Facilitates community collaboration through voice, video, and text chat, integrated docs and tasks, configurable channels, roles, and permissions, seamless mobile and desktop access, rapid message reactions, file sharing, and notification controls for groups.
PeerSuite is an open source, decentralized, private alternative to apps like Discord or Slack. All data is sent only between clients through encrypted WebRTC channels.
United States
AtomJump.com is a well tuned hosted version of the free open-source AtomJump.org. It is free to chat publicly with your family, group or co-workers on your own group.
Dirc is a peer-to-peer web application which uses WebRTC to set up connections between chat participants without requiring a back-end server. The static files can be self-hosted. Other features:
Mazey is your team’s or family's collective brain and communication hub and brings order to their communication, knowledge sharing, and task tracking.
United States
Chat Anywhere is a powerful chat server software for real-time chatting. With Chat Anywhere, you can easily design professional web-based chat rooms.
China
ionBIZ is a complete project management software for ICT, engineering, consultancy and other project driven departments or companies with rich functionalities towards project management, resource planning, time registration, ticketing and more.
Branded platform combining customizable community spaces, event scheduling, course management with video hosting, interactive discussions, AI moderation, member directories, gamified engagement, payment processing, advanced analytics, and automated notifications.
United States
palava.tv is a cost-free, simple to use, secure, and open source platform for video calls. It is developed and operated by a charitable non-profit organization based in the EU. palava.tv runs directly in the web browser and its usage does not require a registration.
Free, unlimited, HD voice and video calls for everyone! Enjoy group video calls with up to 20 participants at ToTok. Top-rated video calling app for Android.
United Kingdom
AVAILO is a business communication app for teams. One place for internal and external communications, open groups for your team members, service providers and customers, with real time messaging, share emails, folders and files, in a simple way.
United Kingdom
