runsonwhat

Closure's tech stack

What does Closure use?

Closure (closure.nl) uses at least 17 tools we can see from public records, including Amazon Web Services for hosting, Microsoft 365 for email and documents, Leadinfo for sales and Trengo for customer support. Last checked .

Industry
IT Services
Size
11–50 employees
Based in
Rotterdam, Netherlands
Founded
2018
LinkedIn
Company page
Re-check liveVisit closure.nl
Tools found
17
Categories
12
Layers
5 of 5
Last checked
Oct 2026

Closure'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

4 tools, where the bytes are served from

Hosting & Cloud

CDN & Edge

DNS

Application

3 tools, what the product is built with

Frontend

Data & Observability

1 tool, what they measure and store

Monitoring

Go-to-market

4 tools, how they find and keep customers

Marketing

Sales & CRM

Support & Docs

Company Ops

5 tools, what the team runs on day to day

Email Delivery

Workspace

Dev Tools

Security & Compliance

Companies like Closure also use

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

Companies with a stack like Closure's

Ranked by shared tools, with rare tools counting more.

More IT Services companies

Other IT Services companies we've checked.

Closure tech stack FAQ

What tools does Closure use?

As of October 2026, runsonwhat has found 17 tools at Closure (closure.nl) in public records. Edge & Hosting: Amazon Web Services, Amazon Route 53 and Google Cloud. Application: React, Tailwind CSS and Gatsby. Data & Observability: Oh Dear. Go-to-market: Leadinfo, Ortto and Trengo. Company Ops: Microsoft 365, Google Workspace and Atlassian. Last checked October 16, 2026.

What cloud does Closure run on?

Closure uses Amazon Web Services for hosting and cloud infrastructure, alongside Google Cloud, according to runsonwhat (October 2026). runsonwhat found Amazon Web Services through Amazon Web Services code on closure.nl. Amazon Web Services is used by 144,878 companies runsonwhat tracks.

What sales tools does Closure use?

The sales tools runsonwhat has found at Closure are Leadinfo (October 2026); no CRM shows up in Closure's public records. runsonwhat found Leadinfo through Leadinfo code on closure.nl. Leadinfo is used by 5,441 companies runsonwhat tracks.

What email provider does Closure use?

Closure uses Microsoft 365 for email and office software, alongside Google Workspace, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365. Microsoft 365 is used by 701,710 companies runsonwhat tracks.

What does Closure use for customer support?

Closure uses Trengo for customer support and documentation, according to runsonwhat (October 2026). runsonwhat found Trengo through Trengo code on closure.nl. Trengo is used by 273 companies runsonwhat tracks.

What marketing software does Closure use?

Closure uses Ortto for marketing, according to runsonwhat (October 2026). runsonwhat found Ortto through email records that authorize Ortto. Ortto is used by 674 companies runsonwhat tracks.

Does Closure use React?

Yes. runsonwhat found React at Closure through React code on closure.nl. React is a Frontend tool used by 124,043 companies runsonwhat tracks.

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

The companies with the stacks most like Closure's are Youbahn, Hittra, Bold Commerce - Magento en Shopify Plus webshops in Amsterdam and Twixl, according to runsonwhat (October 2026). Each shares 4 to 5 tools with Closure, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

How does runsonwhat know what Closure uses?

runsonwhat reads public records only. Of the 17 tools at Closure, 6 were found through code on closure.nl, 5 through DNS records, 3 through email records and 3 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and closure.nl 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.