edX vs Fastmail

edX (Online learning at https://edx.org, powered by the Open edX platform https://openedx.org) and Fastmail (Open-source software developed at Fastmail.) both appear on the Smoower Developer Ecosystem Index.

edX (rank #338) holds a narrow lead over Fastmail (rank #430) on the overall Smoower ecosystem score (43 vs 40). The gap of 3 points reflects composite signals across code, docs, community and reach.

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

edX carries 392 GitHub stars across 250 public repos, with 52 repositories active in the last 90 days and 22 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 16.1x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

edX 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.