Fastmail vs Woo

Fastmail (Open-source software developed at Fastmail.) and Woo (The company behind WooCommerce, the open-source commerce platform for WordPress.) both appear on the Smoower Developer Ecosystem Index.

Woo (rank #103) holds a modest lead over Fastmail (rank #430) on the overall Smoower ecosystem score (55 vs 40). The gap of 15 points reflects composite signals across code, docs, community and reach.

On code quality (the state of repositories, tests, releases and polish), Woo is clearly ahead of Fastmail. On education (docs, guides and learning material for developers), Fastmail is ahead of Woo. On community (issue response, PR reviews and discussion health), Woo is ahead of Fastmail. On reach (how visible the ecosystem is beyond its own repos), Fastmail is clearly ahead of Woo. On momentum (release cadence and how fast the ecosystem moves), Woo is clearly 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. Woo shows 23,045 stars across 247 public repos, 47 active in the last 90 days and 100 external contributors. The star gap on its own does not decide the comparison, but Woo's footprint is roughly 3.6x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Fastmail is the stronger read for anyone weighting reach. Woo 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.