Klaviyo vs SignNow

Klaviyo and SignNow (SignNow e-signature API - send, sign & embed documents in any app. SDKs for Node.js, Python, PHP, .NET & Java.) both appear on the Smoower Developer Ecosystem Index.

SignNow (rank #209) holds a narrow lead over Klaviyo (rank #237) on the overall Smoower ecosystem score (49 vs 48). The gap of 1 points reflects composite signals across code, docs, community and reach.

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

Klaviyo carries 573 GitHub stars across 117 public repos, with 23 repositories active in the last 90 days and 17 external contributors on record. SignNow shows 96 stars across 16 public repos, 8 active in the last 90 days and 4 external contributors. The star gap on its own does not decide the comparison, but Klaviyo's footprint is roughly 6.0x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Klaviyo is the stronger read for anyone weighting community. SignNow 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.