15Five vs Slab

15Five 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.

Slab (rank #455) holds a narrow lead over 15Five (rank #693) on the overall Smoower ecosystem score (39 vs 31). The gap of 8 points reflects composite signals across code, docs, community and reach.

On code quality (the state of repositories, tests, releases and polish), Slab is ahead of 15Five. On education (docs, guides and learning material for developers), Slab is slightly ahead of 15Five. On community (issue response, PR reviews and discussion health), Slab is ahead of 15Five. On reach (how visible the ecosystem is beyond its own repos), Slab is clearly ahead of 15Five. On momentum (release cadence and how fast the ecosystem moves), 15Five is clearly ahead of Slab.

15Five carries 141 GitHub stars across 29 public repos, with 2 repositories active in the last 90 days and 5 external contributors on record. Slab shows 49,433 stars across 28 public repos, 0 active in the last 90 days and 8 external contributors. The star gap on its own does not decide the comparison, but Slab's footprint is roughly 350.6x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

15Five is the stronger read for anyone weighting momentum. Slab looks better where reach 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.