Expensify, Inc vs Fastmail

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

Expensify, Inc (rank #165) holds a modest lead over Fastmail (rank #430) on the overall Smoower ecosystem score (51 vs 40). The gap of 11 points reflects composite signals across code, docs, community and reach.

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

Expensify, Inc carries 9,942 GitHub stars across 66 public repos, with 18 repositories active in the last 90 days and 141 external contributors on record. Fastmail shows 6,316 stars across 38 public repos, 12 active in the last 90 days and 2 external contributors.

Expensify, 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.