Expel, Inc. vs Fastmail

Expel, Inc. and Fastmail (Open-source software developed at Fastmail.) both appear on the Smoower Developer Ecosystem Index.

Expel, Inc. and Fastmail sit at essentially the same overall ecosystem score (40), which is unusual and worth reading through the pillars below.

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

Expel, Inc. carries 73 GitHub stars across 28 public repos, with 3 repositories active in the last 90 days and 2 external contributors on record. Fastmail shows 6,316 stars across 38 public repos, 12 active in the last 90 days and 2 external contributors. The star gap on its own does not decide the comparison, but Fastmail's footprint is roughly 86.5x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Expel, Inc. is the stronger read for anyone weighting code quality. Fastmail 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.