Stream vs Zulip

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

Stream (rank #317) holds a narrow lead over Zulip (rank #536) on the overall Smoower ecosystem score (44 vs 36). The gap of 8 points reflects composite signals across code, docs, community and reach.

On education (docs, guides and learning material for developers), Stream is slightly ahead of Zulip. On community (issue response, PR reviews and discussion health), Stream is slightly ahead of Zulip. On reach (how visible the ecosystem is beyond its own repos), Zulip is slightly ahead of Stream. On momentum (release cadence and how fast the ecosystem moves), Stream is clearly ahead of Zulip.

Stream carries 35,664 GitHub stars across 487 public repos, with 84 repositories active in the last 90 days and 44 external contributors on record. Zulip shows 32,299 stars across 67 public repos, 9 active in the last 90 days and 76 external contributors.

Stream is the stronger read for anyone weighting momentum. Zulip 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.