Stack census— back to the censusSurvey 015 · 06.10.2026

Communication - Custom Communication Systems · open source · awesome-selfhosted

Zulip

zulip.org · answered as zulip.com · HTTP 200 in 1,997 ms

4 things were found in the response on 06.10.2026. This is the front door only: whatever runs behind a login, and anything a browser would have to execute to reveal, is not here.

Where it is served from

Nginxv1.24.0web servers · reverse proxies
  • header — server: nginx/1.24.0 (Ubuntu)

Where their email goes

Google Workspacewebmail · email
  • dns — MX 10 aspmx.l.google.com
  • dns — MX 20 alt1.aspmx.l.google.com

What stands at the door

HSTSsecurity
  • header — strict-transport-security: max-age=31536000; includeSubdomains; preload

Everything else

Ubuntuoperating systems
  • header — server: nginx/1.24.0 (Ubuntu)

Back to the census.