Calendly vs Stream

Calendly (Simple, beautiful scheduling.) and Stream (Build scalable in-app chat, feeds, and live video with AI moderation capabilities in hours, not weeks.) both appear on the Smoower Developer Ecosystem Index.

Stream (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), Stream is clearly ahead of Calendly. On education (docs, guides and learning material for developers), Stream is slightly ahead of Calendly. On community (issue response, PR reviews and discussion health), Stream is clearly ahead of Calendly. On reach (how visible the ecosystem is beyond its own repos), Calendly is clearly ahead of Stream. On momentum (release cadence and how fast the ecosystem moves), Stream 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. Stream shows 35,577 stars across 487 public repos, 90 active in the last 90 days and 42 external contributors. The star gap on its own does not decide the comparison, but Stream's footprint is roughly 269.5x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Calendly is the stronger read for anyone weighting reach. Stream 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.