37signals vs Excalidraw

37signals (HEY! It's in Basecamp!) and Excalidraw (Excalidraw is a whiteboard tool that lets you easily sketch diagrams that have a hand-drawn feel to them.) both appear on the Smoower Developer Ecosystem Index.

Excalidraw (rank #103) holds a narrow lead over 37signals (rank #122) on the overall Smoower ecosystem score (55 vs 54). The gap of 1 points reflects composite signals across code, docs, community and reach.

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

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. Excalidraw shows 136,744 stars across 25 public repos, 3 active in the last 90 days and 215 external contributors.

37signals is the stronger read for anyone weighting momentum. Excalidraw looks better where education 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.