ActiveCampaign vs Klaviyo

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

Klaviyo (rank #237) holds a modest lead over ActiveCampaign (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), ActiveCampaign is slightly ahead of Klaviyo. On education (docs, guides and learning material for developers), ActiveCampaign is ahead of Klaviyo. On community (issue response, PR reviews and discussion health), Klaviyo is ahead of ActiveCampaign. On reach (how visible the ecosystem is beyond its own repos), Klaviyo is ahead of ActiveCampaign. On momentum (release cadence and how fast the ecosystem moves), Klaviyo is clearly ahead of ActiveCampaign.

ActiveCampaign carries 6,653 GitHub stars across 88 public repos, with 6 repositories active in the last 90 days and 3 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 ActiveCampaign's footprint is roughly 11.6x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

ActiveCampaign is the stronger read for anyone weighting education. Klaviyo looks better where momentum 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.