ntfy vs Zulip
| Tagline | Simple HTTP-based push notifications to phone and desktop, no account needed | Open-source team chat with a unique topic-based threading model |
| Category | Team Chat & Collaboration | Team Chat & Collaboration |
| Replaces | Slack, Microsoft Teams | Slack, Microsoft Teams |
| GitHub stars | 32k | 26k |
| Language | Go | Python |
| License | Apache-2.0 | Apache-2.0 |
| Self-host difficulty | 2/5 Easy | 3/5 Moderate |
| Deploy options | Docker Docker Compose Manual | Docker Compose Manual |
| Managed hosting | ||
| Last updated | 4 days ago | 3 days ago |
| View repo | View repo |
Where each falls short
The honest trade-offs — what you give up with each, versus the proprietary tools they replace.
ntfy
- No team chat, threading, or message history browsing; designed for one-way push alerts only.
- No rich message formatting, file sharing, or reactions.
- Rate limiting and attachment storage on the free public server are intentionally restrictive.
- iOS push requires routing through ntfy's own APNs proxy unless you self-compile the app.
Zulip
- Native voice/video calling is limited and usually relies on third-party integrations (Jitsi, Zoom)
- The topic-threading model has a learning curve and can feel unfamiliar to Slack users
- Production installs effectively want a dedicated server; multi-host scaling is involved
- Smaller app/integration ecosystem than Slack
Bottom line
Choose ntfy if you want the lower-effort setup; choose ntfy for the larger community and ecosystem. Zulip has seen more recent development. Open each guide below for deploy steps and the full feature gap.