sera's tech stack
What does sera use?
sera (sera.de) uses at least 11 tools we can see from public records, including Microsoft 365 for email and documents, Let's Encrypt for security and OpenAI for AI. Last checked .
- Based in
- Germany
- Founded
- 1970
- Tools found
- 11
- Categories
- 6
- Layers
- 3 of 5
- Changes seen
- 2
sera's stack, layer by layer
Each tool links to the other companies we've found using it. The label says what kind of public trace gave it away.
Application
4 tools, what the product is built with
Go-to-market
1 tool, how they find and keep customers
Marketing
Company Ops
6 tools, what the team runs on day to day
Security & Compliance
What changed at sera
Recent starts and stops
- StartedExclaimer
- StartedHornetsecurity
sera tech stack FAQ
What tools does sera use?
As of October 2026, runsonwhat has found 11 tools at sera (sera.de) in public records. Application: jQuery, Vimeo and YouTube. Company Ops: Microsoft 365, Apple Business and Let's Encrypt. Last checked October 9, 2026.
What email provider does sera use?
sera uses Microsoft 365 for email and office software, alongside Apple Business and Exclaimer, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365 and a DNS verification record. Microsoft 365 is used by 694,645 companies runsonwhat tracks.
Does sera use jQuery?
Yes. runsonwhat found jQuery at sera through jQuery code on sera.de. jQuery is a Frontend tool used by 884,176 companies runsonwhat tracks.
Does sera use AI tools?
Yes. runsonwhat has found OpenAI at sera; OpenAI, for example, through a DNS verification record for OpenAI. AI services called only from servers leave no public trace, so sera may use more AI tools than these.
Has sera changed tools recently?
Yes. On runsonwhat's rechecks, sera started using Exclaimer and Hornetsecurity (latest on October 9, 2026). A change counts only between two checks of sera.de done the same way.
How does runsonwhat know what sera uses?
runsonwhat reads public records only. Of the 11 tools at sera, 5 were found through DNS records, 3 through code on sera.de and 3 through email records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and sera.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.