Heap vs Klaviyo

Heap (Product Insights) and Klaviyo both appear on the Smoower Developer Ecosystem Index.

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

Heap carries 215 GitHub stars across 65 public repos, with 6 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.

Heap 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.