15Five vs Ahrefs

15Five and Ahrefs (BTW we use OCaml) both appear on the Smoower Developer Ecosystem Index.

Ahrefs (rank #401) holds a modest lead over 15Five (rank #693) on the overall Smoower ecosystem score (41 vs 31). The gap of 10 points reflects composite signals across code, docs, community and reach.

On education (docs, guides and learning material for developers), Ahrefs is slightly ahead of 15Five. On community (issue response, PR reviews and discussion health), Ahrefs is slightly ahead of 15Five. On reach (how visible the ecosystem is beyond its own repos), Ahrefs is ahead of 15Five. On momentum (release cadence and how fast the ecosystem moves), Ahrefs is clearly 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. Ahrefs shows 1,303 stars across 171 public repos, 28 active in the last 90 days and 7 external contributors. The star gap on its own does not decide the comparison, but Ahrefs's footprint is roughly 9.2x 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. Ahrefs 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.