Tool 6 sources
Rocket.Chat
Open-source chat solution offering real-time messaging, video calls, and file sharing for teams of all sizes.
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Microsoft Teams
A curated collection of the best open source alternatives to Microsoft Teams. Each listing includes a website screenshot along with a detailed review of its features.
17 related tools 2 source groups 1 aliases
Tools
Best matching open-source options
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Mattermost
Mattermost provides a flexible, open-source platform for secure team collaboration, designed for organizations with strict security and privacy requirements.
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Jitsi
Host encrypted video conferences directly in your browser, deploy on your own servers, or integrate into applications - all with this powerful open source platform.
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Zulip
Zulip is an open-source team chat app that uses threaded conversations to keep communication organized and efficient for teams of all sizes.
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Nextcloud
Nextcloud offers on-premises file sync, sharing and collaboration platform with advanced security and privacy features.
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Element
Open-source platform for encrypted communication, file sharing, and collaboration based on the Matrix protocol.
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Colanode
Collaboration suite with real-time messaging, rich text pages, file management, and dynamic databases - built for offline work (alternative to Slack, Notion)
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Cinny
Cinny offers a simple, elegant, and secure interface for Matrix-based conversations, protected by end-to-end encryption.
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Wire
A comprehensive collaboration platform offering end-to-end encrypted messaging, file sharing, and video calls with enterprise-grade security and compliance features.
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SAMA
Open source chat server with end-to-end encryption, clustering support, and comprehensive messaging features for building real-time communication apps
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Workadventure
Create customizable virtual workspaces for remote teams to interact naturally, host events, and collaborate through spontaneous conversations and scheduled meetings.
Communication - Custom Communication SystemsCollaborative WorkspacesVideo Conferencing & Virtual Office
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Revolt
Repository for miscellaneous repository management and discussions: https://github.com/revoltchat/revolt/discussions
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Twake
Twake is a secure open source collaboration platform to improve organizational productivity.
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Campfire
Install your own group chat system with @mentions, DMs, and mobile support. One-time purchase, no monthly fees. Includes full source code for customization.
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UnInbox
Streamline team communication with shared inboxes, unlimited email addresses, and customizable workflows. Perfect for modern businesses seeking organized email management.
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Mezon
Build your own community space for gaming, chatting, and hanging out with friends worldwide. Customize your environment for the perfect social experience.
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Twake Chat
Free Matrix-based messenger with end-to-end encryption, multi-platform bridges, and on-premise deployment. Connect across 30+ networks securely.
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