Mattermost
Platform for secure collaboration across the entire software development lifecycle, can be integrated with Gitlab (alternative to Slack).
Two self-hosted Communication - Custom Communication Systems apps, compared on the facts we track: GitHub popularity and activity, license, language, Docker images and a rough hosting estimate.
| Mattermost | Novu | |
|---|---|---|
| Description | Platform for secure collaboration across the entire software development lifecycle, can be integrated with Gitlab (alternative to Slack). | Notification infrastructure for developers. |
| GitHub stars | 39,530 | 40,274 |
| Forks | – | – |
| Open issues | – | – |
| Commits (12 months) | 2.1k | 2.4k |
| Last activity | 2026-11-04 | 2026-11-04 |
| Latest release | v12.1.0-rc3 (2026-11-04) | @novu/framework@v2.14.0 (2026-09-28) |
| Maintenance health | Active | Active |
| License | ⊘ Proprietary | MIT |
| Language / platform | Go, Docker, K8S | Docker, Nodejs |
| Docker Hub image | – | – |
| Docker pulls | – | – |
| Est. server size | ~2 GB, 1 vCPU | ~2 GB, 1 vCPU |
| Est. hosting from | $10/mo | $10/mo |
| Categories | Communication - Custom Communication Systems | Communication - Custom Communication Systems |
| Links | Website · Source | Website · Source |
Summary: On the numbers we track, Mattermost and Novu are evenly matched. The right choice depends on the features you need — read both project descriptions and docs.
This summary is generated from GitHub, Docker Hub and awesome-selfhosted data as of 2026-11-05. It does not rate features or quality.
They are close: Mattermost has 39,530 GitHub stars and Novu has 40,274 (as of 2026-11-05).
Commits in the last 12 months: Mattermost 2,118, Novu 2,446. Both had repository activity on 2026-11-04. Our health labels: Mattermost is “Active”, Novu is “Active”.
Mattermost: ⊘ Proprietary. Novu: MIT. Note: Mattermost includes a non-free license component.
We did not detect a Docker Hub image for either app. The upstream listing mentions Docker as a deployment option for Mattermost and Novu. Check each project's documentation for install options.
Platform for secure collaboration across the entire software development lifecycle, can be integrated with Gitlab (alternative to Slack).
Notification infrastructure for developers.
Browse all self-hosted Communication - Custom Communication Systems apps.