Mattermost vs Slab

Mattermost (Mattermost is a secure collaboration platform for connecting your teams, tools and processes to accelerate mission-critical work.) and Slab (Making the workplace a source of learning and purpose through knowledge-sharing. We're hiring!) both appear on the Smoower Developer Ecosystem Index.

Mattermost (rank #38) holds a meaningful lead over Slab (rank #455) on the overall Smoower ecosystem score (62 vs 39). The gap of 23 points reflects composite signals across code, docs, community and reach.

On code quality (the state of repositories, tests, releases and polish), Mattermost is clearly ahead of Slab. On education (docs, guides and learning material for developers), Mattermost is ahead of Slab. On community (issue response, PR reviews and discussion health), Mattermost is slightly ahead of Slab. On reach (how visible the ecosystem is beyond its own repos), Mattermost is clearly ahead of Slab. On momentum (release cadence and how fast the ecosystem moves), Mattermost is clearly ahead of Slab.

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. Slab shows 49,433 stars across 28 public repos, 0 active in the last 90 days and 8 external contributors.

Mattermost is the stronger read for anyone weighting momentum. Slab 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.