37signals vs Culture Amp

37signals (HEY! It's in Basecamp!) and Culture Amp (The employee feedback platform) both appear on the Smoower Developer Ecosystem Index.

37signals (rank #122) holds a meaningful lead over Culture Amp (rank #693) on the overall Smoower ecosystem score (54 vs 31). The gap of 23 points reflects composite signals across code, docs, community and reach.

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

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. Culture Amp shows 1,202 stars across 179 public repos, 17 active in the last 90 days and 18 external contributors. The star gap on its own does not decide the comparison, but 37signals's footprint is roughly 94.7x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

37signals is the stronger read for anyone weighting reach. Culture Amp makes more sense for teams already using its adjacent tools. The table below breaks the scores down pillar by pillar; the linked profiles cover the underlying repos, docs and community signals in full.