Open Source Microsoft Teams Alternatives
Collaborate without Microsoft 365. Open source Teams alternatives for chat, video calls, file sharing, and team collaboration on your servers.
Microsoft Teams has become a central hub for many organizations, offering features like persistent chat, video conferencing, and seamless integration with the Microsoft 365 suite. However, its reliance on a centralized cloud service and potential data privacy implications often lead users to seek alternative solutions. Lock-in, the need for a Microsoft account, and the complexity of managing larger deployments can also be pain points.
Open Source Alternatives
Mattermost
Team Chat · Collaboration · Devops
Open core, self-hosted team collaboration with chat, AI agents, voice calling, and deep DevOps integrations — all under your control.
Mattermost
OtherWire
Team Chat · Video Conferencing · Collaboration
Open source end-to-end encrypted messaging for teams and enterprises — self-host for complete control over your communications and data.
Wire
GPL 3.0Twake Chat
Team Chat · Collaboration
Open-source Flutter Matrix client with federated identity lookup, Vodozemac E2EE, and enterprise white-labeling for decentralized team communication.
