15Five vs Semrush

15Five 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.

Semrush (rank #317) holds a modest lead over 15Five (rank #693) on the overall Smoower ecosystem score (44 vs 31). The gap of 13 points reflects composite signals across code, docs, community and reach.

On code quality (the state of repositories, tests, releases and polish), Semrush is slightly ahead of 15Five. On education (docs, guides and learning material for developers), Semrush is ahead of 15Five. On community (issue response, PR reviews and discussion health), Semrush is slightly ahead of 15Five. On reach (how visible the ecosystem is beyond its own repos), Semrush is clearly ahead of 15Five. On momentum (release cadence and how fast the ecosystem moves), Semrush is slightly ahead of 15Five.

15Five carries 141 GitHub stars across 29 public repos, with 2 repositories active in the last 90 days and 5 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 Semrush's footprint is roughly 3.2x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

15Five is worth a look for teams already invested in its stack. Semrush looks better where reach 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.