# What does Testfuse use?

Testfuse (testfuse.com) shows public evidence of 17 tools, according to runsonwhat (last checked 2026-11-05).

- Industry: Software
- Size: 11–50 employees
- Based in: Dover, United States
- LinkedIn: https://www.linkedin.com/company/testfuse

## Edge & Hosting

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

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Fonts](https://www.runsonwhat.com/reverse/google-fonts) | Media & UI | Website code |  |
| [Adobe Fonts](https://www.runsonwhat.com/reverse/adobe-fonts) | Media & UI | Website code |  |
| [Next.js](https://www.runsonwhat.com/reverse/nextjs) | Frontend | Website code |  |
| [Lottie](https://www.runsonwhat.com/reverse/lottie) | 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 |  |
| [web-vitals](https://www.runsonwhat.com/reverse/web-vitals) | Monitoring | Website code |  |
| [PostHog](https://www.runsonwhat.com/reverse/posthog) | Analytics | Website code |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Ads](https://www.runsonwhat.com/reverse/google-ads) | Ads & Pixels | Website code |  |
| [HubSpot](https://www.runsonwhat.com/reverse/hubspot) | Sales & CRM | Website code |  |
| [Zoho](https://www.runsonwhat.com/reverse/zoho) | Sales & CRM | DNS verification records, Email records |  |
| [RB2B](https://www.runsonwhat.com/reverse/rb2b) | Sales & CRM | Website code |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Workspace](https://www.runsonwhat.com/reverse/google-workspace) | Workspace | Email records |  |
| [Mailgun](https://www.runsonwhat.com/reverse/mailgun) | Email Delivery | Custom domain, Email records |  |

## FAQ

### What tools does Testfuse use?

As of November 2026, runsonwhat has found 17 tools at Testfuse (testfuse.com) in public records. Edge & Hosting: Cloudflare and Amazon CloudFront. Application: Google Fonts, Adobe Fonts and Next.js. Data & Observability: Google Analytics, Google Tag Manager and web-vitals. Go-to-market: Google Ads, HubSpot and Zoho. Company Ops: Google Workspace and Mailgun. Last checked November 5, 2026.

### What CRM does Testfuse use?

Testfuse uses HubSpot for its CRM, alongside Zoho and RB2B, according to runsonwhat (November 2026). runsonwhat found HubSpot through HubSpot code on testfuse.com. HubSpot is used by 96,837 companies runsonwhat tracks.

### What email provider does Testfuse use?

Testfuse uses Google Workspace for email and office software, according to runsonwhat (November 2026). runsonwhat found Google Workspace through email records that authorize Google Workspace. Google Workspace is used by 414,562 companies runsonwhat tracks.

### What analytics tools does Testfuse use?

Testfuse uses Google Analytics for analytics, alongside Google Tag Manager and PostHog, according to runsonwhat (November 2026). runsonwhat found Google Analytics through Google Analytics code on testfuse.com. Google Analytics is used by 906,281 companies runsonwhat tracks.

### What monitoring tools does Testfuse use?

Testfuse uses web-vitals for monitoring, according to runsonwhat (November 2026). runsonwhat found web-vitals through web-vitals code on testfuse.com. web-vitals is used by 30,132 companies runsonwhat tracks.

### Does Testfuse use Google Fonts?

Yes. runsonwhat found Google Fonts at Testfuse through Google Fonts code on testfuse.com. Google Fonts is a Media & UI tool used by 826,139 companies runsonwhat tracks.

### How does runsonwhat know what Testfuse uses?

runsonwhat reads public records only. Of the 17 tools at Testfuse, 12 were found through code on testfuse.com, 3 through DNS records, 1 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 testfuse.com about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/testfuse.com (updated November 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.