One of the most popular alternatives to Mattermost is Element, which is open source and free for personal use. Other popular alternatives are Discord, Matrix, Stoat Chat and Slack. You're spoiled for choice with Group Chat Apps like Mattermost: we list more than 100 alternatives for the web, Android, iPhone, Windows and Mac.
PrivOS is a AI operating system for enterprise that replaces 6 SaaS tools in one platform. No-Code AI Agent Builder lets teams deploy agents in 2 to 5 hours without coding. Private cloud, GDPR-ready.
United States
Shape helps busy teams reach consensus and ship faster with focused spaces designed for discussion and delivery.
United States
HOLOH offers lifelike collaboration in next-generation meetings by merging real video feeds with immersive 3D spaces. Powered by cutting-edge AI, it delivers true presence and connection - the closest thing to meeting in real life, on any device.
Luxembourg
EU
Cloud-based platform for business chat, messaging, and task management, delivering structured communication, instant access control, integration with business tools, and business-grade security while supporting flexible workflows, clear roles, and team alignment.
Israel
Margin is an open-source team communication app that brings messaging, channels, and voice & video calls together in one place. Built as a European alternative to Slack, Microsoft Teams, and Discord.
DenmarkEU
Qaxa is an end-to-end encrypted workspace for teams. Chat in real time, assign tasks, write notes, and share files — all encrypted on your device. Your encryption keys stay with you, so Qaxa can’t read your content. No trackers. No logs. No AI training.
SlovakiaEU
CyberCord is a self-hosted room platform that runs in a single container from a single self-contained binary. docker run it, open the URL, claim it — that's the whole setup. It serves its own interface to desktop and mobile browsers, offers optional native desktop clients...
United States
Redesigned team chat with built-in Deep Work Mode, notification batching, focus status, and transparent public-first channels. Includes AI thread summaries for fast catch-up, thread inbox, real-time messaging with threads, and mobile apps. Setup in minutes.
Australia
Shrtct is a productivity tool for teams, providing in-context communication (chit chat free!) via Shrtct Hashes. It's great for preparing your team, making important decisions, gathering and storing information, planning, debating and hashing it out.
United States
Germany
