edX vs Slab

edX (Online learning at https://edx.org, powered by the Open edX platform https://openedx.org) and Slab (Making the workplace a source of learning and purpose through knowledge-sharing. We're hiring!) both appear on the Smoower Developer Ecosystem Index.

edX (rank #338) holds a narrow lead over Slab (rank #455) on the overall Smoower ecosystem score (43 vs 39). The gap of 4 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 Slab. On education (docs, guides and learning material for developers), Slab is ahead of edX. On community (issue response, PR reviews and discussion health), Slab is clearly ahead of edX. On reach (how visible the ecosystem is beyond its own repos), edX is slightly ahead of Slab. On momentum (release cadence and how fast the ecosystem moves), edX is clearly ahead of Slab.

edX carries 392 GitHub stars across 250 public repos, with 52 repositories active in the last 90 days and 22 external contributors on record. Slab shows 49,433 stars across 28 public repos, 0 active in the last 90 days and 8 external contributors. The star gap on its own does not decide the comparison, but Slab's footprint is roughly 126.1x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

edX is the stronger read for anyone weighting momentum. Slab 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.