15Five vs Affirm

15Five and Affirm both appear on the Smoower Developer Ecosystem Index.

Affirm (rank #485) holds a narrow lead over 15Five (rank #693) on the overall Smoower ecosystem score (38 vs 31). The gap of 7 points reflects composite signals across code, docs, community and reach.

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

15Five carries 141 GitHub stars across 29 public repos, with 2 repositories active in the last 90 days and 5 external contributors on record. Affirm shows 207 stars across 116 public repos, 9 active in the last 90 days and 4 external contributors.

15Five is the stronger read for anyone weighting momentum. Affirm 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.