runsonwhat

Web ONCE's tech stack

What does Web ONCE use?

Web ONCE (once.es) uses at least 14 tools we can see from public records, including Amazon Web Services for hosting, Microsoft 365 for email and documents, Google Analytics for analytics and Metricool for marketing. Last checked .

Industry
Civic & Social Organization
Size
10,000+ employees
Based in
Madrid, Spain
Founded
1938
LinkedIn
Company page
Re-check liveVisit once.es
Tools found
14
Categories
9
Layers
5 of 5
Last checked
Oct 2026

Web ONCE'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.

Edge & Hosting

2 tools, where the bytes are served from

Hosting & Cloud

CDN & Edge

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

4 tools, how they find and keep customers

Marketing

Ads & Pixels

Company Ops

4 tools, what the team runs on day to day

Workspace

Security & Compliance

Companies like Web ONCE also use

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

Companies with a stack like Web ONCE's

Ranked by shared tools, with rare tools counting more.

More Civic & Social Organization companies

Other Civic & Social Organization companies we've checked.

Web ONCE tech stack FAQ

What tools does Web ONCE use?

As of October 2026, runsonwhat has found 14 tools at Web ONCE (once.es) in public records. Edge & Hosting: Amazon Web Services and Amazon CloudFront. Application: jQuery and Google Fonts. Data & Observability: Google Analytics and Google Tag Manager. Go-to-market: Microsoft Ads, Metricool and Selligent. Company Ops: Microsoft 365, Cookiebot and Proofpoint. Last checked October 21, 2026.

What cloud does Web ONCE run on?

Web ONCE uses Amazon Web Services for hosting and cloud infrastructure, according to runsonwhat (October 2026). runsonwhat found Amazon Web Services through a subdomain that points at Amazon Web Services and code on once.es. Amazon Web Services is used by 145,791 companies runsonwhat tracks.

What email provider does Web ONCE use?

Web ONCE uses Microsoft 365 for email and office software, alongside Exclaimer, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365 and email records. Microsoft 365 is used by 712,535 companies runsonwhat tracks.

What analytics tools does Web ONCE use?

Web ONCE uses Google Analytics for analytics, alongside Google Tag Manager, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on once.es. Google Analytics is used by 884,022 companies runsonwhat tracks.

What marketing software does Web ONCE use?

Web ONCE uses Metricool for marketing, alongside Selligent, according to runsonwhat (October 2026). runsonwhat found Metricool through Metricool code on once.es. Metricool is used by 7,643 companies runsonwhat tracks.

Does Web ONCE use jQuery?

Yes. runsonwhat found jQuery at Web ONCE through jQuery code on once.es. jQuery is a Frontend tool used by 918,136 companies runsonwhat tracks.

Which companies have a tech stack similar to Web ONCE's?

The companies with the stacks most like Web ONCE's are Mediapart, El Diario Vasco, Prijsvrij Vakanties and Petro-Canada, according to runsonwhat (October 2026). Each shares 3 to 9 tools with Web ONCE, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

How does runsonwhat know what Web ONCE uses?

runsonwhat reads public records only. Of the 14 tools at Web ONCE, 7 were found through code on once.es, 3 through subdomains that point at the vendor, 2 through DNS records and 2 through email records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and once.es 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.