Alternatives to Mattermost

Alternatives, ranked

1. 1
   DI

   Discourse

   Modern open source discussion platform built for the next decade of the Internet.

   • Higher score
   • Runs on more platforms
   • No shared features
   Updated 25 days ago

   57 89.0 = Compare
2. 2
   RO

   Rocket.Chat

   Communications platform that securely connects teams, customers, and partners via chat, voice and video.

   • Higher score
   • Runs on more platforms
   • No shared features
   Updated 10 days ago

   60 88.8 = Compare
3. 3
   NS

   Nextcloud Server

   Self-hosted file sync and sharing platform with calendar, contacts and collaboration apps.

   • No shared features
   Updated 4 days ago

   71 88.0 = Compare
4. 4
   JM

   Jitsi Meet

   WebRTC video conferencing application that can be self-hosted and used from the browser or mobile apps.

   • Released more recently
   • Runs on more platforms
   • No shared features
   Updated 1 day ago

   82 87.3 = Compare
5. 5
   ZU

   Zulip

   Organized team chat app with unique email-style threading to keep conversations on topic.

   • Runs on more platforms
   • No shared features
   Updated 40 days ago

   102 85.3 = Compare
6. 6
   SY

   Synapse

   Matrix homeserver written in Python for hosting decentralized, federated chat.

   • Runs on more platforms
   • No shared features
   Updated 4 days ago

   133 80.5 = Compare
7. 7
   CA

   Cal.com

   Scheduling infrastructure for everyone, open source alternative to Calendly with granular control.

   • Runs on more platforms
   • No shared features
   Stale: 202 days without a release

   157 63.4 = Compare