37signals vs Semrush

37signals (HEY! It's in Basecamp!) and Semrush (We do love open source and have an opportunity to make it better from now.) both appear on the Smoower Developer Ecosystem Index.

37signals (rank #122) holds a modest lead over Semrush (rank #317) on the overall Smoower ecosystem score (54 vs 44). The gap of 10 points reflects composite signals across code, docs, community and reach.

On code quality (the state of repositories, tests, releases and polish), 37signals is ahead of Semrush. On education (docs, guides and learning material for developers), Semrush is ahead of 37signals. On community (issue response, PR reviews and discussion health), 37signals is ahead of Semrush. On reach (how visible the ecosystem is beyond its own repos), 37signals is clearly ahead of Semrush. On momentum (release cadence and how fast the ecosystem moves), 37signals is ahead of Semrush.

37signals carries 113,857 GitHub stars across 236 public repos, with 48 repositories active in the last 90 days and 298 external contributors on record. Semrush shows 454 stars across 11 public repos, 2 active in the last 90 days and 7 external contributors. The star gap on its own does not decide the comparison, but 37signals's footprint is roughly 250.8x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

37signals is the stronger read for anyone weighting reach. Semrush looks better where education 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.