runsonwhat

PassBy's tech stack

What does PassBy use?

PassBy (passby.com) uses at least 19 tools we can see from public records, including Vercel for hosting, Microsoft 365 for email and documents, HubSpot for sales and Google Analytics for analytics. Last checked .

Industry
Internet
Size
11–50 employees
Based in
London, United Kingdom
Founded
2023
LinkedIn
Company page
Re-check liveVisit passby.com
Tools found
19
Categories
10
Layers
5 of 5
Last checked
Oct 2026

PassBy'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

5 tools, what the product is built with

Frontend

Media & UI

Data & Observability

1 tool, what they measure and store

Analytics

Go-to-market

9 tools, how they find and keep customers

Website & CMS

Marketing

Ads & Pixels

Sales & CRM

Company Ops

2 tools, what the team runs on day to day

Workspace

Companies like PassBy also use

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

Companies with a stack like PassBy's

Ranked by shared tools, with rare tools counting more.

More Internet companies

Other Internet companies we've checked.

PassBy tech stack FAQ

What tools does PassBy use?

As of October 2026, runsonwhat has found 19 tools at PassBy (passby.com) in public records. Edge & Hosting: Cloudflare and Vercel. Application: jQuery, Google Fonts and Font Awesome. Data & Observability: Google Analytics. Go-to-market: WordPress, Elementor and LinkedIn Insight Tag. Company Ops: Microsoft 365 and Google Workspace. Last checked October 24, 2026.

What cloud does PassBy run on?

PassBy uses Vercel for hosting and cloud infrastructure, according to runsonwhat (October 2026). runsonwhat found Vercel through a DNS verification record for Vercel. Vercel is used by 49,551 companies runsonwhat tracks.

What CRM does PassBy use?

PassBy uses HubSpot for its CRM, according to runsonwhat (October 2026). runsonwhat found HubSpot through email records that authorize HubSpot and code on passby.com. HubSpot is used by 95,133 companies runsonwhat tracks.

What email provider does PassBy use?

PassBy 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 716,483 companies runsonwhat tracks.

What analytics tools does PassBy use?

PassBy uses Google Analytics for analytics, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on passby.com. Google Analytics is used by 892,749 companies runsonwhat tracks.

What is PassBy's website built with?

PassBy uses WordPress for its website, alongside Elementor, WooCommerce and Rank Math, according to runsonwhat (October 2026). runsonwhat found WordPress through WordPress code on passby.com. WordPress is used by 601,944 companies runsonwhat tracks.

Does PassBy use jQuery?

Yes. runsonwhat found jQuery at PassBy through jQuery code on passby.com. jQuery is a Frontend tool used by 922,857 companies runsonwhat tracks.

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

The companies with the stacks most like PassBy's are Toptana Technologies, Ortecha, CTAM and Zrzutka.pl, according to runsonwhat (October 2026). Each shares 6 to 15 tools with PassBy, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

How does runsonwhat know what PassBy uses?

runsonwhat reads public records only. Of the 19 tools at PassBy, 11 were found through code on passby.com, 5 through DNS records, 2 through email records and 1 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and passby.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.