draw.io vs SlackAPI

draw.io (draw.io specialises in browser-based diagramming components and applications.) and SlackAPI (https://docs.slack.dev/tools) both appear on the Smoower Developer Ecosystem Index.

SlackAPI (rank #47) holds a modest lead over draw.io (rank #338) on the overall Smoower ecosystem score (61 vs 43). The gap of 18 points reflects composite signals across code, docs, community and reach.

On code quality (the state of repositories, tests, releases and polish), SlackAPI is clearly ahead of draw.io. On education (docs, guides and learning material for developers), draw.io is slightly ahead of SlackAPI. On community (issue response, PR reviews and discussion health), draw.io is ahead of SlackAPI. On reach (how visible the ecosystem is beyond its own repos), draw.io is clearly ahead of SlackAPI. On momentum (release cadence and how fast the ecosystem moves), SlackAPI 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. SlackAPI shows 17,894 stars across 37 public repos, 19 active in the last 90 days and 39 external contributors. The star gap on its own does not decide the comparison, but draw.io's footprint is roughly 4.9x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

draw.io is the stronger read for anyone weighting reach. SlackAPI looks better where code quality 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.