Klaviyo vs Stamped.io

Klaviyo and Stamped.io (Increase brand loyalty. Accelerate brand growth. Stamped.io empowers you to grow your business by enhancing user engagement, increasing revenue, and improving c) both appear on the Smoower Developer Ecosystem Index.

Klaviyo (rank #237) holds a modest lead over Stamped.io (rank #662) on the overall Smoower ecosystem score (48 vs 32). The gap of 16 points reflects composite signals across code, docs, community and reach.

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

Klaviyo carries 573 GitHub stars across 117 public repos, with 23 repositories active in the last 90 days and 17 external contributors on record. Stamped.io shows 4 stars across 3 public repos, 0 active in the last 90 days and 0 external contributors. The star gap on its own does not decide the comparison, but Klaviyo's footprint is roughly 143.3x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Klaviyo is the stronger read for anyone weighting community. Stamped.io 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.