Calendly vs Open edX

Calendly (Simple, beautiful scheduling.) and Open edX (The community-driven, open-source project powering edX.org and thousands of other online education sites around the world.) both appear on the Smoower Developer Ecosystem Index.

Open edX (rank #337) holds a modest lead over Calendly (rank #729) on the overall Smoower ecosystem score (43 vs 30). The gap of 13 points reflects composite signals across code, docs, community and reach.

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

Calendly carries 132 GitHub stars across 29 public repos, with 0 repositories active in the last 90 days and 0 external contributors on record. Open edX shows 10,600 stars across 186 public repos, 99 active in the last 90 days and 96 external contributors. The star gap on its own does not decide the comparison, but Open edX's footprint is roughly 80.3x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Calendly is the stronger read for anyone weighting reach. Open edX looks better where momentum 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.