Fastmail vs SignNow

Fastmail (Open-source software developed at Fastmail.) 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 modest lead over Fastmail (rank #430) on the overall Smoower ecosystem score (49 vs 40). The gap of 9 points reflects composite signals across code, docs, community and reach.

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

Fastmail carries 6,316 GitHub stars across 38 public repos, with 12 repositories active in the last 90 days and 2 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 Fastmail's footprint is roughly 65.8x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

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