ExpressVPN vs Klaviyo

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

Klaviyo (rank #237) holds a modest lead over ExpressVPN (rank #569) on the overall Smoower ecosystem score (48 vs 35). The gap of 13 points reflects composite signals across code, docs, community and reach.

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

ExpressVPN carries 1,250 GitHub stars across 12 public repos, with 3 repositories active in the last 90 days and 7 external contributors on record. Klaviyo shows 573 stars across 117 public repos, 23 active in the last 90 days and 17 external contributors.

ExpressVPN is the stronger read for anyone weighting education. 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.