Fastmail vs Odoo

Fastmail (Open-source software developed at Fastmail.) and Odoo (Open Source Business Apps) both appear on the Smoower Developer Ecosystem Index.

Fastmail (rank #430) holds a narrow lead over Odoo (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), Odoo is slightly ahead of Fastmail. On education (docs, guides and learning material for developers), Fastmail is ahead of Odoo. On community (issue response, PR reviews and discussion health), Odoo is clearly ahead of Fastmail. On reach (how visible the ecosystem is beyond its own repos), Fastmail is clearly ahead of Odoo. On momentum (release cadence and how fast the ecosystem moves), Fastmail is slightly ahead of Odoo.

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. Odoo shows 59,467 stars across 43 public repos, 25 active in the last 90 days and 257 external contributors. The star gap on its own does not decide the comparison, but Odoo's footprint is roughly 9.4x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Fastmail is the stronger read for anyone weighting reach. Odoo looks better where community 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.