draw.io vs Mattermost

draw.io (draw.io specialises in browser-based diagramming components and applications.) and Mattermost (Mattermost is a secure collaboration platform for connecting your teams, tools and processes to accelerate mission-critical work.) both appear on the Smoower Developer Ecosystem Index.

Mattermost (rank #40) holds a modest lead over draw.io (rank #338) on the overall Smoower ecosystem score (62 vs 43). The gap of 19 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 draw.io. On education (docs, guides and learning material for developers), Mattermost is slightly ahead of draw.io. On community (issue response, PR reviews and discussion health), draw.io is slightly ahead of Mattermost. On reach (how visible the ecosystem is beyond its own repos), Mattermost is clearly ahead of draw.io. On momentum (release cadence and how fast the ecosystem moves), Mattermost is clearly ahead of draw.io.

draw.io carries 86,983 GitHub stars across 32 public repos, with 12 repositories active in the last 90 days and 13 external contributors on record. Mattermost shows 49,882 stars across 262 public repos, 58 active in the last 90 days and 105 external contributors.

draw.io is the stronger read for anyone weighting community. Mattermost looks better where momentum is the deciding factor. The table below breaks the scores down pillar by pillar; the linked profiles cover the underlying repos, docs and community signals in full.