# What does CertFlow LTD use?

CertFlow LTD (certflow.co.uk) shows public evidence of 15 tools, according to runsonwhat (last checked 2026-10-20).

- Industry: Application Software
- Based in: Leeds, United Kingdom
- Founded: 2026
- LinkedIn: https://www.linkedin.com/company/certflow-ltd

## Edge & Hosting

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | Subprocessor list |  |
| [Vercel](https://www.runsonwhat.com/reverse/vercel) | Hosting & Cloud | Custom domain, Website code, Subprocessor list |  |

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [GSAP](https://www.runsonwhat.com/reverse/gsap) | Media & UI | Website code |  |
| [Stripe](https://www.runsonwhat.com/reverse/stripe) | Payments & Billing | Subprocessor list |  |
| [Astro](https://www.runsonwhat.com/reverse/astro) | Frontend | Website code |  |
| [Supabase](https://www.runsonwhat.com/reverse/supabase) | Backend & Database | Subprocessor list |  |

## Data & Observability

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Analytics](https://www.runsonwhat.com/reverse/ga) | Analytics | Website code, Subprocessor list |  |
| [Google Tag Manager](https://www.runsonwhat.com/reverse/gtm) | Analytics | Website code |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Ads](https://www.runsonwhat.com/reverse/google-ads) | Ads & Pixels | Website code |  |
| [LinkedIn Insight Tag](https://www.runsonwhat.com/reverse/linkedin-insight) | Ads & Pixels | Subprocessor list |  |
| [Calendly](https://www.runsonwhat.com/reverse/calendly) | Sales & CRM | Subprocessor list |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Workspace](https://www.runsonwhat.com/reverse/google-workspace) | Workspace | Email records |  |
| [Resend](https://www.runsonwhat.com/reverse/resend) | Email Delivery | DNS verification records |  |

## Recent changes at CertFlow LTD

- 2026-10-20: started using [Resend](https://www.runsonwhat.com/reverse/resend)
- 2026-10-11: started using [Google Workspace](https://www.runsonwhat.com/reverse/google-workspace)

## FAQ

### What tools does CertFlow use?

As of October 2026, runsonwhat has found 15 tools at CertFlow (certflow.co.uk) in public records. Edge & Hosting: Cloudflare and Vercel. Application: GSAP, Stripe and Astro. Data & Observability: Google Analytics and Google Tag Manager. Go-to-market: Google Ads, LinkedIn Insight Tag and Calendly. Company Ops: Google Workspace and Resend. Last checked October 20, 2026.

### What cloud does CertFlow run on?

CertFlow uses Vercel for hosting and cloud infrastructure, according to runsonwhat (October 2026). runsonwhat found Vercel through a subdomain that points at Vercel and code on certflow.co.uk. Vercel is used by 48,027 companies runsonwhat tracks.

### What sales tools does CertFlow use?

The sales tools runsonwhat has found at CertFlow are Calendly (October 2026); no CRM shows up in CertFlow's public records. runsonwhat found Calendly through Calendly on certflow.co.uk's subprocessor list. Calendly is used by 27,467 companies runsonwhat tracks.

### What email provider does CertFlow use?

CertFlow uses Google Workspace for email and office software, according to runsonwhat (October 2026). runsonwhat found Google Workspace through email records that authorize Google Workspace. Google Workspace is used by 402,285 companies runsonwhat tracks.

### What payment provider does CertFlow use?

CertFlow uses Stripe for payments and billing, according to runsonwhat (October 2026). runsonwhat found Stripe through Stripe on certflow.co.uk's subprocessor list. Stripe is used by 27,951 companies runsonwhat tracks.

### What analytics tools does CertFlow use?

CertFlow uses Google Analytics for analytics, alongside Google Tag Manager, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on certflow.co.uk and its subprocessor list. Google Analytics is used by 877,741 companies runsonwhat tracks.

### Does CertFlow use Cloudflare?

Yes. runsonwhat found Cloudflare at CertFlow through Cloudflare on certflow.co.uk's subprocessor list. Cloudflare is a CDN & Edge tool used by 702,322 companies runsonwhat tracks.

### Has CertFlow changed tools recently?

Yes. On runsonwhat's rechecks, CertFlow started using Resend and Google Workspace (latest on October 20, 2026). A change counts only between two checks of certflow.co.uk done the same way.

### How does runsonwhat know what CertFlow uses?

runsonwhat reads public records only. Of the 15 tools at CertFlow, 5 were found through code on certflow.co.uk, 5 through its own subprocessor list, 2 through DNS records, 1 through email records, 1 through website configuration files 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 certflow.co.uk about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/certflow.co.uk (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.