Assembly Line

Element-web vs Zulip

Element-web and Zulip are both team chat software. Element-web is open source under AGPL-3.0, with 14k GitHub stars. Zulip is open source under Apache-2.0, with 26k GitHub stars.

Which to pick

Pick Element-web when
You use Matrix and want the most complete client, or want to host your own web client.
Pick Zulip when
Your team finds Slack threads chaotic and wants organised, asynchronous conversations, self-hosted or hosted.

Side by side

What it does

The Element web and desktop client for Matrix, with encrypted messaging, rooms, threads and calls.

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

Watch out

Heavy for a chat client, and moved to AGPL.

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

Self-hosted server and desktop app

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

Built with

TypeScript and React

Python, Django, TypeScript, PostgreSQL and Redis

Source code

Open source, AGPL-3.0 (network copyleft)

Open source, Apache-2.0 (permissive)

What the license allows

Use inside your business is unrestricted. If you change it and let customers use it over the internet, you must publish your changes.

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

How widely known

14k GitHub stars

26k GitHub stars

How established

Established: started 11 years ago, latest release v1.12.33.

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 each project's README and GitHub data. License, age and popularity lines are worked out directly.