Zulip: The most complete communication hub for your class.

Feature	Zulip	Slack	Discord	Piazza	CampusWire
Rich, modern chat
Apps for every platform
Self-hosting option for full control over data
Dedicated account
Topic-based threading
Resolve topics/questions
Move topics/questions
Native LaTeX support
Built-in spoilers
Emoji reactions
@-mention groups
Scales to 10,000s of users
# supported languages	23	13	30	1	1