Expel, Inc. vs Klaviyo

Expel, Inc. and Klaviyo both appear on the Smoower Developer Ecosystem Index.

Klaviyo (rank #237) holds a narrow lead over Expel, Inc. (rank #430) on the overall Smoower ecosystem score (48 vs 40). 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), Klaviyo is ahead of Expel, Inc.. On education (docs, guides and learning material for developers), Expel, Inc. is slightly ahead of Klaviyo. On community (issue response, PR reviews and discussion health), Klaviyo is clearly ahead of Expel, Inc.. On reach (how visible the ecosystem is beyond its own repos), Klaviyo is ahead of Expel, Inc.. On momentum (release cadence and how fast the ecosystem moves), Expel, Inc. is slightly ahead of Klaviyo.

Expel, Inc. carries 73 GitHub stars across 28 public repos, with 3 repositories active in the last 90 days and 2 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 Klaviyo's footprint is roughly 7.8x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Expel, Inc. is the stronger read for anyone weighting momentum. 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.