# What does Castler use?

Castler (castler.com) shows public evidence of 14 tools, according to runsonwhat (last checked 2026-10-26).

- Industry: Financial Services
- Size: 51–200 employees
- Based in: India
- Founded: 2020
- LinkedIn: https://www.linkedin.com/company/castler

## Edge & Hosting

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

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Fonts](https://www.runsonwhat.com/reverse/google-fonts) | Media & UI | Website code |  |
| [Astro](https://www.runsonwhat.com/reverse/astro) | Frontend | 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 |  |

## 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 | DNS verification records, Website code |  |
| [Microsoft Ads](https://www.runsonwhat.com/reverse/bing-ads) | Ads & Pixels | Website code |  |
| [LinkedIn Insight Tag](https://www.runsonwhat.com/reverse/linkedin-insight) | Ads & Pixels | Website code |  |
| [Zoho](https://www.runsonwhat.com/reverse/zoho) | Sales & CRM | Custom domain |  |

## Company Ops

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

## FAQ

### What tools does Castler use?

As of October 2026, runsonwhat has found 14 tools at Castler (castler.com) in public records. Edge & Hosting: Cloudflare. Application: Google Fonts and Astro. Data & Observability: Google Analytics and Google Tag Manager. Go-to-market: Google Ads, Meta Pixel and Microsoft Ads. Company Ops: Microsoft 365 and SendGrid. Last checked October 26, 2026.

### What CRM does Castler use?

Castler uses Zoho for its CRM, according to runsonwhat (October 2026). runsonwhat found Zoho through a subdomain that points at Zoho. Zoho is used by 63,050 companies runsonwhat tracks.

### What email provider does Castler use?

Castler 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 a DNS verification record. Microsoft 365 is used by 715,067 companies runsonwhat tracks.

### What analytics tools does Castler use?

Castler uses Google Analytics for analytics, alongside Google Tag Manager, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on castler.com. Google Analytics is used by 888,679 companies runsonwhat tracks.

### Does Castler use Google Fonts?

Yes. runsonwhat found Google Fonts at Castler through Google Fonts code on castler.com. Google Fonts is a Media & UI tool used by 815,237 companies runsonwhat tracks.

### How does runsonwhat know what Castler uses?

runsonwhat reads public records only. Of the 14 tools at Castler, 7 were found through code on castler.com, 3 through DNS records, 2 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 castler.com about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/castler.com (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.