# What does 4sys Kft. use?

4sys Kft. (4sys.hu) shows public evidence of 9 tools, according to runsonwhat (last checked 2026-10-17).

- Industry: Software
- Size: 11–50 employees
- Based in: Hungary
- LinkedIn: https://www.linkedin.com/company/4sys-kft

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [jQuery](https://www.runsonwhat.com/reverse/jquery) | Frontend | Website code |  |
| [Google Fonts](https://www.runsonwhat.com/reverse/google-fonts) | Media & UI | Website code |  |
| [Vimeo](https://www.runsonwhat.com/reverse/vimeo) | Media & UI | Website code |  |
| [YouTube](https://www.runsonwhat.com/reverse/youtube) | Media & UI | Website code |  |
| [Google Maps](https://www.runsonwhat.com/reverse/google-maps) | Media & UI | Website code |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | DNS verification records, Email records |  |
| [Let's Encrypt](https://www.runsonwhat.com/reverse/letsencrypt) | Security & Compliance | DNS records |  |
| [Sectigo](https://www.runsonwhat.com/reverse/sectigo) | Security & Compliance | DNS records |  |

## FAQ

### What tools does 4sys Kft. use?

As of October 2026, runsonwhat has found 9 tools at 4sys Kft. (4sys.hu) in public records. Application: jQuery, Google Fonts and Vimeo. Company Ops: Microsoft 365, Let's Encrypt and Sectigo. Last checked October 17, 2026.

### What email provider does 4sys Kft. use?

4sys Kft. uses Microsoft 365 for email and office software, 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 706,450 companies runsonwhat tracks.

### Does 4sys Kft. use jQuery?

Yes. runsonwhat found jQuery at 4sys Kft. through jQuery code on 4sys.hu. jQuery is a Frontend tool used by 906,288 companies runsonwhat tracks.

### How does runsonwhat know what 4sys Kft. uses?

runsonwhat reads public records only. Of the 9 tools at 4sys Kft., 5 were found through code on 4sys.hu, 4 through DNS records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and 4sys.hu about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/4sys.hu (updated October 2026). Counts are companies with direct public evidence of the tool (DNS records, certificates, website code, a real-browser crawl, subprocessor lists), so they are lower bounds. Methodology: https://www.runsonwhat.com/methodology.