Castler's tech stack
What does Castler use?
Castler (castler.com) uses at least 14 tools we can see from public records, including Microsoft 365 for email and documents, Zoho for sales, Google Analytics for analytics and Cloudflare for content delivery. Last checked .
- Industry
- Financial Services
- Size
- 51–200 employees
- Based in
- India
- Founded
- 2020
- Company page
- Tools found
- 14
- Categories
- 10
- Layers
- 5 of 5
- Last checked
- Oct 2026
Castler's stack, layer by layer
Each tool links to the other companies we've found using it. The label says what kind of public trace gave it away.
Edge & Hosting
1 tool, where the bytes are served from
CDN & Edge
Application
3 tools, what the product is built with
Data & Observability
2 tools, what they measure and store
Go-to-market
6 tools, how they find and keep customers
Marketing
Sales & CRM
Company Ops
2 tools, what the team runs on day to day
Email Delivery
Workspace
Castler tech stack 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 7, 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 61,358 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 698,164 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 846,709 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 787,523 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.
We read public traces only: DNS and email records, certificate logs, website code and published subprocessor lists. A tool is listed when a direct record backs it up, and dropped when a recheck no longer finds it. Is this your company? See how to opt out.