Deploy Zulip team chat on Ubuntu — topic-based threading, Slack import, full-text search, fully self-hosted.
Grab the automated bash script from GitHub to follow along with the video.
wget https://raw.githubusercontent.com/mhmdali94/Docker/main/communication/zulip/zulip-ubuntu.sh
chmod +x zulip-ubuntu.sh
sudo bash zulip-ubuntu.shwget https://raw.githubusercontent.com/mhmdali94/Docker/main/communication/zulip/zulip-ubuntu.shchmod +x zulip-ubuntu.shThe script installs Docker, then deploys Zulip with PostgreSQL, Redis, RabbitMQ, and Memcached automatically.
sudo bash zulip-ubuntu.shOpen your browser and navigate to:
http://<your-server-ip>Complete the organization setup, invite your team, and explore the unique stream/topic threading model that keeps conversations organized.
| Port | Purpose |
|---|---|
| 80 | HTTP |
| 443 | HTTPS |
| 5432 | PostgreSQL (internal) |
| 5672 | RabbitMQ (internal) |
Zulip is a powerful open-source group chat platform that organises conversations into streams and topics — a model that makes it far easier to follow discussions in large, active teams than flat channel-based tools like Slack. Self-hosting gives organisations complete message history ownership with no per-seat fees.
Zulip solves the problem that plagues Slack and Mattermost: conversations get buried. Its stream+topic model means every message belongs to a named topic inside a channel — so discussions from last week are fully searchable and readable in context. Teams that switched from Slack consistently report less noise and better async communication. Fully self-hosted, no per-seat fees.
Port 80 (HTTP) and 443 (HTTPS) for the web UI. PostgreSQL on 5432 and RabbitMQ on 5672 are internal only. Expose 80/443 to your network and use a reverse proxy for HTTPS. Keep all other ports internal.
Direct alternatives: Mattermost (channel-based, more Slack-like UI), Matrix/Synapse (federated, E2E encrypted), Rocket.Chat (feature-rich, heavier). Cloud: Slack (the gold standard but expensive), Microsoft Teams (enterprise), Discord (informal teams).
Don't use Zulip if your team is already comfortable with Slack-style channel chat and won't adapt to topic threading — the learning curve is real. And if you need end-to-end encryption by default, Matrix is the better choice.
PrismaTechWork provides end-to-end infrastructure services — from initial deployment and security hardening to ongoing monitoring, automated backups, and dedicated support. Whether you need a single-server setup or a multi-site network, our team ensures your infrastructure is built right, secured properly, and maintained reliably.
Yes — Zulip has an official Slack importer. Export your Slack workspace data, then run `manage.py convert_slack_data` inside the Zulip container. Users, messages, and channels are all migrated.
Streams are like Slack channels (e.g., #engineering). Topics are sub-threads inside a stream (e.g., 'Deploy pipeline fix'). Every message belongs to both — this keeps discussions organized without creating hundreds of channels.
Yes — native iOS and Android apps are available on the App Store and Google Play. The mobile apps support push notifications, file uploads, and full message history.
Yes, Zulip has built-in integrations for GitHub, GitLab, Jira, PagerDuty, and 100+ other services via webhooks. You can also build custom bots using the Zulip Bot API.
A single Zulip server comfortably handles hundreds to a few thousand active users. For larger deployments, tune PostgreSQL and add more RAM. The Zulip Cloud hosts organizations with tens of thousands of users.
Yes — Zulip supports LDAP, SAML 2.0, Google OAuth, GitHub OAuth, and Azure AD. Configure them in `settings.py` (or via environment variables in the Docker setup).
No — Zulip encrypts data in transit (TLS) and at rest, but messages are decryptable on the server (not end-to-end). For E2E encryption, use Matrix/Element instead.
Run `docker compose pull && docker compose up -d`. Check the Zulip changelog first — major versions sometimes require running `manage.py migrate` after upgrade. Always back up PostgreSQL before upgrading.