15Five vs KAYAK

15Five and KAYAK both appear on the Smoower Developer Ecosystem Index.

KAYAK (rank #485) holds a narrow lead over 15Five (rank #693) on the overall Smoower ecosystem score (38 vs 31). The gap of 7 points reflects composite signals across code, docs, community and reach.

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

15Five carries 141 GitHub stars across 29 public repos, with 2 repositories active in the last 90 days and 5 external contributors on record. KAYAK shows 3,186 stars across 72 public repos, 4 active in the last 90 days and 1 external contributors. The star gap on its own does not decide the comparison, but KAYAK's footprint is roughly 22.6x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

15Five is the stronger read for anyone weighting community. KAYAK 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.