Discourse vs Zulip

Discourse (The 100% open source discussion platform built for the next decade of the Internet.) and Zulip (Organized team chat) both appear on the Smoower Developer Ecosystem Index.

Discourse (rank #189) holds a modest lead over Zulip (rank #536) on the overall Smoower ecosystem score (50 vs 36). The gap of 14 points reflects composite signals across code, docs, community and reach.

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

Discourse carries 55,678 GitHub stars across 620 public repos, with 90 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.

Discourse is the stronger read for anyone weighting momentum. Zulip looks better where community 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.