Features

Self Host
- Docker
- Multiple Deployment Options (Heroku, Digital Ocean, Sandstorm, etc.)
Authentication Options
- OAuth
- SAML
- LDAP
- CAS (1.0, 2.0 + attribute sync)
- Facebook, Github, Google, etc.
I18N: More than 30 languages so far
File Uploading
- Drag-and-drop
- Upload to file system
- AWS + CDN
Live chat
- SMS Integration
Rich Media
- Audio Calls
- Video Conferencing
- Screen Sharing
Notifications
- Desktop and Mobile
- Use your own gateway
- Use @all to notify everyone in the room (configurable to max. users)
- Receive missed messages in your e-mail
Apps
- Mobile
- Native
Integrations
- Hubot
- Incoming / Outgoing Webhooks
- Data Importer
  - Import from Slack
- Slack Bridge
Profiles
- Custom avatars
Text Decorations
- Mentions
- Link Preview
- Embedded videos
- Markdown
- Code, single or multi-line
- TexMath
- Emojis
  - Reactions
Message editing
- Editing is as simple as using your arrow keys for picking the right message to edit
- Setup to keep the history of edits or discard the previous text
- Show or hide edited/deleted status
History
- Search
  - Full-text search
  - Regex search
Add stars to rooms and mark them as favorites
Add stars and pins to messages
- Star messages that are important to you. Only you have access to your stars.
- Pin messages that are important to everyone.
- Access your starred/pinned and messages you were mentioned on quickly through sidebar buttons
REST API
Roles and Permissions
Public and Private multi-user rooms
One-on-one conversations
- Off-the-record messaging (messages are encrypted and transiently saved on the database)
Slash commands