KAYAK vs Zulip

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

KAYAK (rank #485) holds a narrow lead over Zulip (rank #536) on the overall Smoower ecosystem score (38 vs 36). The gap of 2 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 KAYAK. On education (docs, guides and learning material for developers), KAYAK is ahead of Zulip. On community (issue response, PR reviews and discussion health), Zulip is ahead of KAYAK. On reach (how visible the ecosystem is beyond its own repos), KAYAK is ahead of Zulip. On momentum (release cadence and how fast the ecosystem moves), Zulip is slightly ahead of KAYAK.

KAYAK carries 3,186 GitHub stars across 72 public repos, with 4 repositories active in the last 90 days and 1 external contributors on record. Zulip shows 32,299 stars across 67 public repos, 9 active in the last 90 days and 76 external contributors. The star gap on its own does not decide the comparison, but Zulip's footprint is roughly 10.1x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

KAYAK is the stronger read for anyone weighting reach. 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.