runsonwhat

GEW Köln's tech stack

What does GEW Köln use?

GEW Köln (gewkoelnag.de) uses at least 7 tools we can see from public records, including etracker for analytics, Mailjet for email delivery, Let's Encrypt for security and Amazon Web Services for hosting. GEW Köln started using etracker in Nov 2026. Last checked .

Industry
Holding Company
Based in
Germany
Re-check liveVisit gewkoelnag.de
Tools found
7
Categories
5
Layers
3 of 5
Changes seen
2

GEW Köln's stack, layer by layer

Of 7 tools, 2 came from DNS verification records, 2 from DNS records, 1 from custom domain and 2 from other records. Each tool links to the other companies we've found using it. The label says what kind of public trace gave it away.

Edge & Hosting

1 tool, where the bytes are served from

Hosting & Cloud

Data & Observability

1 tool, what they measure and store

Analytics

Company Ops

5 tools, what the team runs on day to day

Email Delivery

Workspace

Security & Compliance

What changed at GEW Köln

Recent starts and stops

  1. Startedetracker
  2. StartedTelekom Security

Companies like GEW Köln also use

Tools common among companies with a similar stack that we haven't found at GEW Köln.

Companies with a stack like GEW Köln's

Ranked by shared tools, with rare tools counting more.

GEW Köln tech stack FAQ

What tools does GEW Köln use?

As of November 2026, runsonwhat has found 7 tools at GEW Köln (gewkoelnag.de) in public records. Edge & Hosting: Amazon Web Services. Data & Observability: etracker. Company Ops: Microsoft 365, Let's Encrypt and Mailjet. Last checked November 10, 2026.

What cloud does GEW Köln run on?

GEW Köln uses Amazon Web Services for hosting and cloud infrastructure, according to runsonwhat (November 2026). runsonwhat found Amazon Web Services through a subdomain that points at Amazon Web Services. Amazon Web Services is used by 147,733 companies runsonwhat tracks.

What email provider does GEW Köln use?

GEW Köln uses Microsoft 365 for email and office software, according to runsonwhat (November 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365 and email records. Microsoft 365 is used by 739,097 companies runsonwhat tracks.

What analytics tools does GEW Köln use?

GEW Köln uses etracker for analytics, according to runsonwhat (November 2026). runsonwhat found etracker through etracker code on gewkoelnag.de. etracker is used by 1,287 companies runsonwhat tracks.

Does GEW Köln use Let's Encrypt?

Yes. runsonwhat found Let's Encrypt at GEW Köln through DNS records that point at Let's Encrypt. Let's Encrypt is a Security & Compliance tool used by 59,978 companies runsonwhat tracks.

Has GEW Köln changed tools recently?

Yes. On runsonwhat's rechecks, GEW Köln started using etracker and Telekom Security (latest on November 2, 2026). A change counts only between two checks of gewkoelnag.de done the same way.

Which companies have a tech stack similar to GEW Köln's?

The companies with the stacks most like GEW Köln's are RheinNetz, Cologne University Of Applied Sciences, Dillinger and Schleupen SE, according to runsonwhat (November 2026). Each shares 3 to 4 tools with GEW Köln, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

How does runsonwhat know what GEW Köln uses?

runsonwhat reads public records only. Of the 7 tools at GEW Köln, 4 were found through DNS records, 1 through subdomains that point at the vendor, 1 through email records and 1 through code on gewkoelnag.de. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and gewkoelnag.de about monthly.

We read public traces only: DNS and email records, certificate logs, website code and published subprocessor lists. A tool is listed when a direct record backs it up, and dropped when a recheck no longer finds it. Is this your company? See how to opt out.