Assembly Line

Discord vs Zulip

Discord and Zulip are both team chat software. Discord is a commercial product from Discord Inc. Zulip is open source under Apache-2.0, with 26k GitHub stars.

Which to pick

Pick Discord when
You run a public or semi-public community, such as gamers, an open-source project or a creator audience.
Pick Zulip when
Your team finds Slack threads chaotic and wants organised, asynchronous conversations, self-hosted or hosted.

Side by side

What it does

Voice, video and text chat organised into servers and channels, built for gaming groups and online communities.

A team chat server and web app built around topic-based threads within channels, with desktop and mobile clients.

Watch out

Not built for business use: no proper data retention or compliance controls, and content is hard to search from outside.

The topic model takes adjustment, and self-hosted push notifications go through Zulip's paid service for larger teams.

Ready for

Production-ready (both)

Runs as

Cloud service, desktop app and mobile app

Self-hosted server, cloud service, desktop app and mobile app

Built with

Not published

Python, Django, TypeScript, PostgreSQL and Redis

Source code

Closed source, sold by Discord Inc.

Open source, Apache-2.0 (permissive)

What the license allows

Closed source: you use it under the maker's terms and cannot change or resell the code.

You can build it into a product you sell, as long as you keep its copyright notice.

How widely known

42k Wikipedia readers a month on phones

26k GitHub stars

How established

Not known

Established: started 11 years ago, latest release 12.3.

Other comparisons

More team chat apps

Every team chat product and project, ranked

Both sides were judged on 2026-11-03 from makers' descriptions, Wikipedia, READMEs and GitHub data. License, age and popularity lines are worked out directly.