# What does First.bg use?

First.bg (first.bg) shows public evidence of 14 tools, according to runsonwhat (last checked 2026-10-20).

- Industry: Real Estate
- Size: 11–50 employees
- Based in: София / Sofija, Bulgaria
- Founded: 2013
- LinkedIn: https://www.linkedin.com/company/first-estates

## Edge & Hosting

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | Website code |  |

## Application

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

## Data & Observability

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Analytics](https://www.runsonwhat.com/reverse/ga) | Analytics | Website code |  |
| [Google Tag Manager](https://www.runsonwhat.com/reverse/gtm) | Analytics | Website code |  |
| [Microsoft Clarity](https://www.runsonwhat.com/reverse/clarity) | Analytics | Website code |  |
| [Hotjar](https://www.runsonwhat.com/reverse/hotjar) | Analytics | Website code |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Ads](https://www.runsonwhat.com/reverse/google-ads) | Ads & Pixels | Website code |  |
| [Meta Pixel](https://www.runsonwhat.com/reverse/meta-pixel) | Ads & Pixels | Website code |  |
| [LinkedIn Insight Tag](https://www.runsonwhat.com/reverse/linkedin-insight) | Ads & Pixels | Website code |  |
| [Brevo](https://www.runsonwhat.com/reverse/brevo) | Marketing | DNS verification records |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | Email records, Website code |  |

## FAQ

### What tools does First.bg use?

As of October 2026, runsonwhat has found 14 tools at First.bg (first.bg) in public records. Edge & Hosting: Cloudflare. Application: jQuery, YouTube and GSAP. Data & Observability: Google Analytics, Google Tag Manager and Microsoft Clarity. Go-to-market: Google Ads, Meta Pixel and LinkedIn Insight Tag. Company Ops: Microsoft 365. Last checked October 20, 2026.

### What email provider does First.bg use?

First.bg uses Microsoft 365 for email and office software, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365 and code on first.bg. Microsoft 365 is used by 715,803 companies runsonwhat tracks.

### What analytics tools does First.bg use?

First.bg uses Google Analytics for analytics, alongside Google Tag Manager, Microsoft Clarity and Hotjar, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on first.bg. Google Analytics is used by 890,938 companies runsonwhat tracks.

### What marketing software does First.bg use?

First.bg uses Brevo for marketing, according to runsonwhat (October 2026). runsonwhat found Brevo through a DNS verification record for Brevo. Brevo is used by 80,882 companies runsonwhat tracks.

### Does First.bg use jQuery?

Yes. runsonwhat found jQuery at First.bg through jQuery code on first.bg. jQuery is a Frontend tool used by 921,812 companies runsonwhat tracks.

### How does runsonwhat know what First.bg uses?

runsonwhat reads public records only. Of the 14 tools at First.bg, 12 were found through code on first.bg, 1 through email records and 1 through DNS records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and first.bg about monthly.


---

Source: runsonwhat, https://www.runsonwhat.com/company/first.bg (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.