37signals vs Slab

37signals (HEY! It's in Basecamp!) and Slab (Making the workplace a source of learning and purpose through knowledge-sharing. We're hiring!) both appear on the Smoower Developer Ecosystem Index.

37signals (rank #122) holds a modest lead over Slab (rank #455) on the overall Smoower ecosystem score (54 vs 39). The gap of 15 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 Slab. On education (docs, guides and learning material for developers), 37signals is slightly ahead of Slab. On community (issue response, PR reviews and discussion health), 37signals is ahead of Slab. On reach (how visible the ecosystem is beyond its own repos), 37signals is clearly ahead of Slab. On momentum (release cadence and how fast the ecosystem moves), 37signals is clearly ahead of Slab.

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. Slab shows 49,433 stars across 28 public repos, 0 active in the last 90 days and 8 external contributors.

37signals is the stronger read for anyone weighting momentum. Slab 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.