Formbricks vs Klaviyo

Formbricks (Open Source Qualtrics Alternative) and Klaviyo both appear on the Smoower Developer Ecosystem Index.

Formbricks and Klaviyo sit at essentially the same overall ecosystem score (48), which is unusual and worth reading through the pillars below.

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

Formbricks carries 12,675 GitHub stars across 18 public repos, with 9 repositories active in the last 90 days and 6 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 Formbricks's footprint is roughly 22.1x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Formbricks 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.