Mattermost vs Zulip

Mattermost (Mattermost is a secure collaboration platform for connecting your teams, tools and processes to accelerate mission-critical work.) and Zulip (Organized team chat) both appear on the Smoower Developer Ecosystem Index.

Mattermost (rank #39) holds a meaningful lead over Zulip (rank #536) on the overall Smoower ecosystem score (62 vs 36). The gap of 26 points reflects composite signals across code, docs, community and reach.

On code quality (the state of repositories, tests, releases and polish), Mattermost is ahead of Zulip. On education (docs, guides and learning material for developers), Mattermost is ahead of Zulip. On reach (how visible the ecosystem is beyond its own repos), Mattermost is clearly ahead of Zulip. On momentum (release cadence and how fast the ecosystem moves), Mattermost is clearly ahead of Zulip.

Mattermost carries 49,882 GitHub stars across 262 public repos, with 58 repositories active in the last 90 days and 105 external contributors on record. Zulip shows 32,299 stars across 67 public repos, 9 active in the last 90 days and 76 external contributors.

Mattermost is the stronger read for anyone weighting reach. Zulip makes more sense for teams already using its adjacent tools. The table below breaks the scores down pillar by pillar; the linked profiles cover the underlying repos, docs and community signals in full.