Mattermost
- Website : https://about.mattermost.com/
- Dockerfile : Yes
- Android app : Yes
- iOS app : Yes
- Language : Go, React
Rocket.Chat
Website : https://rocket.chat Dockerfile : Yes Android app : Yes iOS app : Yes Language : Node.js
Zulip
- Website : https://zulipchat.com/
- Dockerfile : No
- Android app : Yes
- iOS app : Yes
- Language : Python