Adyen vs SignNow

Adyen 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.

Adyen (rank #165) holds a narrow lead over SignNow (rank #209) on the overall Smoower ecosystem score (51 vs 49). The gap of 2 points reflects composite signals across code, docs, community and reach.

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

Adyen carries 2,684 GitHub stars across 65 public repos, with 49 repositories active in the last 90 days and 39 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 Adyen's footprint is roughly 28.0x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Adyen is the stronger read for anyone weighting code quality. SignNow looks better where reach 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.