Affirm vs 37signals

Affirm and 37signals (HEY! It's in Basecamp!) both appear on the Smoower Developer Ecosystem Index.

37signals (rank #122) holds a modest lead over Affirm (rank #485) on the overall Smoower ecosystem score (54 vs 38). The gap of 16 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 Affirm. On education (docs, guides and learning material for developers), Affirm is clearly ahead of 37signals. On community (issue response, PR reviews and discussion health), 37signals is ahead of Affirm. On reach (how visible the ecosystem is beyond its own repos), 37signals is ahead of Affirm. On momentum (release cadence and how fast the ecosystem moves), 37signals is clearly ahead of Affirm.

Affirm carries 207 GitHub stars across 116 public repos, with 9 repositories active in the last 90 days and 4 external contributors on record. 37signals shows 113,857 stars across 236 public repos, 48 active in the last 90 days and 298 external contributors. The star gap on its own does not decide the comparison, but 37signals's footprint is roughly 550.0x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Affirm is the stronger read for anyone weighting education. 37signals 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.