runsonwhat

a1's tech stack

What does a1 use?

a1 (a1.hr) uses at least 24 tools we can see from public records, including Microsoft 365 for email and documents, Google Analytics for analytics, PayPal for payments and Bloomreach for marketing. Last checked .

Industry
Mobile Phone
Size
1,001–5,000 employees
Based in
Zagreb-Črnomerec, Croatia
Founded
1999
LinkedIn
Company page
Re-check liveVisit a1.hr
Tools found
24
Categories
10
Layers
4 of 5
Last checked
Oct 2026

a1'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

8 tools, what the product is built with

Frontend

Payments & Billing

Media & UI

Data & Observability

3 tools, what they measure and store

Analytics

Go-to-market

8 tools, how they find and keep customers

Marketing

Ads & Pixels

Company Ops

5 tools, what the team runs on day to day

Workspace

Collaboration

Dev Tools

Security & Compliance

Companies like a1 also use

Tools common among companies with a similar stack that we haven't found at a1.

Companies with a stack like a1's

Ranked by shared tools, with rare tools counting more.

a1 tech stack FAQ

What tools does a1 use?

We've found 24 tools at a1 (a1.hr). Application: jQuery, Google Fonts and Font Awesome. Data & Observability: Google Analytics, Google Tag Manager and Microsoft Clarity. Go-to-market: Google Ads, Meta Pixel and Microsoft Ads. Company Ops: Microsoft 365, reCAPTCHA and Atlassian. Last checked October 2, 2026.

What email provider does a1 use?

a1 uses Microsoft 365 for email and documents. We found Microsoft 365 through DNS verification records and email records.

What payment provider does a1 use?

a1 uses PayPal for payments. We found PayPal through website code.

What analytics tools does a1 use?

a1 uses Google Analytics, Google Tag Manager and Microsoft Clarity for analytics. We found Google Analytics through website code.

What marketing software does a1 use?

a1 uses Bloomreach and PushPushGo for marketing. We found Bloomreach through website code.

Does a1 use Microsoft 365?

Yes. We found Microsoft 365 at a1 through DNS verification records and email records. Microsoft 365 is used by 330,493 companies we track.

How does runsonwhat know what a1 uses?

We read public traces only: a1's DNS and email records, certificate logs, the code its website loads, and published subprocessor lists. A tool is listed only when a direct record backs it up. DNS is rechecked weekly and the website 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.