Kustomer vs sendinblue (now Brevo)

Kustomer and sendinblue (now Brevo) both appear on the Smoower Developer Ecosystem Index.

sendinblue (now Brevo) (rank #372) holds a narrow lead over Kustomer (rank #602) on the overall Smoower ecosystem score (42 vs 34). The gap of 8 points reflects composite signals across code, docs, community and reach.

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

Kustomer carries 15 GitHub stars across 19 public repos, with 6 repositories active in the last 90 days and 4 external contributors on record. sendinblue (now Brevo) shows 653 stars across 37 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 sendinblue (now Brevo)'s footprint is roughly 43.5x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Kustomer is the stronger read for anyone weighting momentum. sendinblue (now Brevo) looks better where education 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.