Customer IO vs edX

Customer IO and edX (Online learning at https://edx.org, powered by the Open edX platform https://openedx.org) both appear on the Smoower Developer Ecosystem Index.

Customer IO (rank #165) holds a narrow lead over edX (rank #338) on the overall Smoower ecosystem score (51 vs 43). The gap of 8 points reflects composite signals across code, docs, community and reach.

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

Customer IO carries 684 GitHub stars across 107 public repos, with 42 repositories active in the last 90 days and 26 external contributors on record. edX shows 392 stars across 250 public repos, 52 active in the last 90 days and 22 external contributors.

Customer IO is the stronger read for anyone weighting education. edX 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.