# What does Index.dev use?

Index.dev (index.dev) shows public evidence of 25 tools, according to runsonwhat (last checked 2026-10-07).

- Industry: Software
- Size: 51–200 employees
- Based in: London, United Kingdom
- LinkedIn: https://www.linkedin.com/company/indexdev

## Edge & Hosting

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

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Fonts](https://www.runsonwhat.com/reverse/google-fonts) | Media & UI | Website code |  |
| [React](https://www.runsonwhat.com/reverse/react) | Frontend | Website code |  |
| [Adobe Fonts](https://www.runsonwhat.com/reverse/adobe-fonts) | Media & UI | Website code |  |
| [Tailwind CSS](https://www.runsonwhat.com/reverse/tailwind) | Frontend | Website code |  |
| [Next.js](https://www.runsonwhat.com/reverse/nextjs) | Frontend | Website code |  |
| [Stripe](https://www.runsonwhat.com/reverse/stripe) | Payments & Billing | DNS verification records, 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 |  |

## 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 |  |
| [Calendly](https://www.runsonwhat.com/reverse/calendly) | Sales & CRM | Website code |  |
| [Ahrefs](https://www.runsonwhat.com/reverse/ahrefs) | Marketing | Website code |  |
| [Apollo.io](https://www.runsonwhat.com/reverse/apollo) | Sales & CRM | Website code |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | DNS verification records |  |
| [Google Workspace](https://www.runsonwhat.com/reverse/google-workspace) | Workspace | Email records, Website code |  |
| [SendGrid](https://www.runsonwhat.com/reverse/sendgrid) | Email Delivery | Email records, Website code |  |
| [Let's Encrypt](https://www.runsonwhat.com/reverse/letsencrypt) | Security & Compliance | DNS records |  |
| [Sectigo](https://www.runsonwhat.com/reverse/sectigo) | Security & Compliance | DNS records |  |
| [DigiCert](https://www.runsonwhat.com/reverse/digicert) | Security & Compliance | DNS records |  |
| [Google Trust Services](https://www.runsonwhat.com/reverse/google-trust) | Security & Compliance | DNS records |  |
| [Valimail](https://www.runsonwhat.com/reverse/valimail) | Security & Compliance | Email records |  |
| [Amazon Trust Services](https://www.runsonwhat.com/reverse/amazon-trust) | Security & Compliance | DNS records |  |

## FAQ

### What tools does Index.dev use?

As of October 2026, runsonwhat has found 25 tools at Index.dev (index.dev) in public records. Edge & Hosting: Cloudflare. Application: Google Fonts, React and Adobe Fonts. Data & Observability: Google Analytics, Google Tag Manager and Microsoft Clarity. Go-to-market: Google Ads, Meta Pixel and Calendly. Company Ops: Microsoft 365, Google Workspace and SendGrid. Last checked October 7, 2026.

### What sales tools does Index.dev use?

The sales tools runsonwhat has found at Index.dev are Calendly and Apollo.io (October 2026); no CRM shows up in Index.dev's public records. runsonwhat found Calendly through Calendly code on index.dev.

### What email provider does Index.dev use?

Index.dev uses Microsoft 365 for email and office software, alongside Google Workspace, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365. Microsoft 365 is used by 694,568 companies runsonwhat tracks.

### What payment provider does Index.dev use?

Index.dev uses Stripe for payments and billing, according to runsonwhat (October 2026). runsonwhat found Stripe through a DNS verification record for Stripe and code on index.dev. Stripe is used by 25,414 companies runsonwhat tracks.

### What analytics tools does Index.dev use?

Index.dev uses Google Analytics for analytics, alongside Google Tag Manager and Microsoft Clarity, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on index.dev. Google Analytics is used by 826,468 companies runsonwhat tracks.

### What marketing software does Index.dev use?

Index.dev uses Ahrefs for marketing, according to runsonwhat (October 2026). runsonwhat found Ahrefs through Ahrefs code on index.dev. Ahrefs is used by 22,551 companies runsonwhat tracks.

### Does Index.dev use Google Fonts?

Yes. runsonwhat found Google Fonts at Index.dev through Google Fonts code on index.dev. Google Fonts is a Media & UI tool used by 769,070 companies runsonwhat tracks.

### How does runsonwhat know what Index.dev uses?

runsonwhat reads public records only. Of the 25 tools at Index.dev, 13 were found through code on index.dev, 9 through DNS records and 3 through email records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and index.dev about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/index.dev (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.