Open edX vs Slab

Open edX (The community-driven, open-source project powering edX.org and thousands of other online education sites around the world.) 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.

Open edX (rank #372) holds a narrow lead over Slab (rank #455) on the overall Smoower ecosystem score (42 vs 39). 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), Open edX is ahead of Slab. On education (docs, guides and learning material for developers), Slab is ahead of Open edX. On community (issue response, PR reviews and discussion health), Open edX is slightly ahead of Slab. On reach (how visible the ecosystem is beyond its own repos), Slab is ahead of Open edX. On momentum (release cadence and how fast the ecosystem moves), Open edX is clearly ahead of Slab.

Open edX carries 10,654 GitHub stars across 186 public repos, with 100 repositories active in the last 90 days and 91 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 4.6x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

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