Deezer vs Zulip

Deezer and Zulip (Organized team chat) both appear on the Smoower Developer Ecosystem Index.

Deezer and Zulip sit at essentially the same overall ecosystem score (36), which is unusual and worth reading through the pillars below.

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

Deezer carries 29,854 GitHub stars across 99 public repos, with 5 repositories active in the last 90 days and 2 external contributors on record. Zulip shows 32,299 stars across 67 public repos, 9 active in the last 90 days and 76 external contributors.

Deezer is the stronger read for anyone weighting education. Zulip 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.