Citadel100's tech stack
What does Citadel100 use?
Citadel100 (citadel100.com) uses at least 7 tools we can see from public records, including Let's Encrypt for security, Microsoft 365 for email and documents, WordPress for its website and Cloudflare for content delivery. Last checked .
- Industry
- IT Services
- Size
- 11–50 employees
- Based in
- Dublin, Ireland
- Founded
- 2002
- Company page
- Tools found
- 7
- Categories
- 4
- Layers
- 3 of 5
- Last checked
- Nov 2026
Citadel100's stack, layer by layer
Of 7 tools, 5 came from DNS records, 1 from email records and 1 from website code. 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
CDN & Edge
Go-to-market
1 tool, how they find and keep customers
Website & CMS
Company Ops
5 tools, what the team runs on day to day
Workspace
Security & Compliance
Citadel100 tech stack FAQ
What tools does Citadel100 use?
As of November 2026, runsonwhat has found 7 tools at Citadel100 (citadel100.com) in public records. Edge & Hosting: Cloudflare. Go-to-market: WordPress. Company Ops: Microsoft 365, Let's Encrypt and Sectigo. Last checked November 5, 2026.
What email provider does Citadel100 use?
Citadel100 uses Microsoft 365 for email and office software, according to runsonwhat (November 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365. Microsoft 365 is used by 730,767 companies runsonwhat tracks.
What is Citadel100's website built with?
Citadel100 uses WordPress for its website, according to runsonwhat (November 2026). runsonwhat found WordPress through WordPress code on citadel100.com. WordPress is used by 606,692 companies runsonwhat tracks.
Does Citadel100 use Cloudflare?
Yes. runsonwhat found Cloudflare at Citadel100 through DNS records that point at Cloudflare and code on citadel100.com. Cloudflare is a CDN & Edge tool used by 731,393 companies runsonwhat tracks.
How does runsonwhat know what Citadel100 uses?
runsonwhat reads public records only. Of the 7 tools at Citadel100, 5 were found through DNS records, 1 through email records and 1 through code on citadel100.com. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and citadel100.com 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.