37signals vs Twilio SendGrid

37signals (HEY! It's in Basecamp!) and Twilio SendGrid (Official open source libraries - send emails and integrate with our APIs fast.) both appear on the Smoower Developer Ecosystem Index.

Twilio SendGrid (rank #55) holds a narrow lead over 37signals (rank #122) on the overall Smoower ecosystem score (60 vs 54). The gap of 6 points reflects composite signals across code, docs, community and reach.

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

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. Twilio SendGrid shows 12,177 stars across 125 public repos, 23 active in the last 90 days and 9 external contributors. The star gap on its own does not decide the comparison, but 37signals's footprint is roughly 9.4x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

37signals is the stronger read for anyone weighting community. Twilio SendGrid looks better where code quality 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.