Proton Mail vs Zulip

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

Proton Mail (rank #401) holds a narrow lead over Zulip (rank #536) on the overall Smoower ecosystem score (41 vs 36). The gap of 5 points reflects composite signals across code, docs, community and reach.

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

Proton Mail carries 16,265 GitHub stars across 186 public repos, with 19 repositories active in the last 90 days and 20 external contributors on record. Zulip shows 32,299 stars across 67 public repos, 9 active in the last 90 days and 76 external contributors.

Proton Mail is the stronger read for anyone weighting reach. Zulip looks better where education 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.