runsonwhat

Duden's tech stack

What does Duden use?

Duden (duden.de) uses at least 24 tools we can see from public records, including rexx systems for hiring and HR, Postmark for email delivery, Microsoft 365 for email and documents and Google Analytics for analytics. Last checked .

Industry
Publishing
Size
11–50 employees
Based in
Berlin, Germany
LinkedIn
Company page
Re-check liveVisit duden.de
Tools found
24
Categories
12
Layers
5 of 5
Last checked
Nov 2026

Duden's stack, layer by layer

Of 24 tools, 8 came from DNS verification records, 7 from website config, 4 from website code and 5 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

DNS

Application

2 tools, what the product is built with

Frontend

Media & UI

Data & Observability

2 tools, what they measure and store

Analytics

Go-to-market

9 tools, how they find and keep customers

Marketing

Ads & Pixels

Company Ops

10 tools, what the team runs on day to day

Email Delivery

Workspace

Collaboration

Dev Tools

People & HR

Finance & Legal

Companies like Duden also use

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

Companies with a stack like Duden's

Ranked by shared tools, with rare tools counting more.

More Publishing companies

Other Publishing companies we've checked.

Duden tech stack FAQ

What tools does Duden use?

As of November 2026, runsonwhat has found 24 tools at Duden (duden.de) in public records. Edge & Hosting: Amazon Route 53. Application: Astro and Extensis. Data & Observability: Google Analytics and Google Tag Manager. Go-to-market: Google Ad Manager, Microsoft Xandr and Magnite. Company Ops: Microsoft 365, SendGrid and Adobe. Last checked November 8, 2026.

What email provider does Duden use?

Duden uses Microsoft 365 for email and office software, according to runsonwhat (November 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365 and a DNS verification record. Microsoft 365 is used by 734,171 companies runsonwhat tracks.

What analytics tools does Duden use?

Duden uses Google Analytics for analytics, alongside Google Tag Manager, according to runsonwhat (November 2026). runsonwhat found Google Analytics through Google Analytics code on duden.de. Google Analytics is used by 903,921 companies runsonwhat tracks.

What does Duden use for hiring and HR?

Duden uses rexx systems for hiring and HR, according to runsonwhat (November 2026). runsonwhat found rexx systems through email records that authorize rexx systems. rexx systems is used by 659 companies runsonwhat tracks.

Does Duden use SendGrid?

Yes. runsonwhat found SendGrid at Duden through email records that authorize SendGrid. SendGrid is a Email Delivery tool used by 200,312 companies runsonwhat tracks.

Which companies have a tech stack similar to Duden's?

The companies with the stacks most like Duden's are Verlag an der Ruhr, Cornelsen Verlag, Cornelsen Experimenta and TYPO3, according to runsonwhat (November 2026). Each shares 6 to 14 tools with Duden, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

How does runsonwhat know what Duden uses?

runsonwhat reads public records only. Of the 24 tools at Duden, 9 were found through DNS records, 7 through website configuration files, 4 through code on duden.de and 4 through email records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and duden.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.