ActiveCampaign vs Fastmail

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

Fastmail (rank #430) holds a narrow lead over ActiveCampaign (rank #485) on the overall Smoower ecosystem score (40 vs 38). The gap of 2 points reflects composite signals across code, docs, community and reach.

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

ActiveCampaign carries 6,653 GitHub stars across 88 public repos, with 6 repositories active in the last 90 days and 3 external contributors on record. Fastmail shows 6,316 stars across 38 public repos, 12 active in the last 90 days and 2 external contributors.

ActiveCampaign 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.