KAYAK vs Klaviyo

KAYAK and Klaviyo both appear on the Smoower Developer Ecosystem Index.

Klaviyo (rank #237) holds a modest lead over KAYAK (rank #485) on the overall Smoower ecosystem score (48 vs 38). The gap of 10 points reflects composite signals across code, docs, community and reach.

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

KAYAK carries 3,186 GitHub stars across 72 public repos, with 4 repositories active in the last 90 days and 1 external contributors on record. Klaviyo shows 573 stars across 117 public repos, 23 active in the last 90 days and 17 external contributors. The star gap on its own does not decide the comparison, but KAYAK's footprint is roughly 5.6x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

KAYAK is the stronger read for anyone weighting code quality. Klaviyo looks better where community 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.