Castle Learning's tech stack
What does Castle Learning use?
Castle Learning (castlelearning.com) uses at least 8 tools we can see from public records, including Microsoft 365 for email and documents, HubSpot for sales, Atlassian Statuspage for monitoring and Cloudflare for content delivery. Last checked .
- Industry
- E-learning
- Size
- 11–50 employees
- Based in
- Rochester, United States
- Founded
- 1991
- Company page
- Tools found
- 8
- Categories
- 8
- Layers
- 5 of 5
- Last checked
- Oct 2026
Castle Learning'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
1 tool, what the product is built with
Data & Observability
1 tool, what they measure and store
Monitoring
Go-to-market
2 tools, how they find and keep customers
Marketing
Sales & CRM
Company Ops
3 tools, what the team runs on day to day
Castle Learning tech stack FAQ
What tools does Castle Learning use?
As of October 2026, runsonwhat has found 8 tools at Castle Learning (castlelearning.com) in public records. Edge & Hosting: Cloudflare. Application: Anthropic. Data & Observability: Atlassian Statuspage. Go-to-market: HubSpot. Company Ops: Microsoft 365, GlobalSign and Dropbox. Last checked October 20, 2026.
What CRM does Castle Learning use?
Castle Learning uses HubSpot for its CRM, according to runsonwhat (October 2026). runsonwhat found HubSpot through email records that authorize HubSpot. HubSpot is used by 94,905 companies runsonwhat tracks.
What email provider does Castle Learning use?
Castle Learning 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 715,969 companies runsonwhat tracks.
What monitoring tools does Castle Learning use?
Castle Learning uses Atlassian Statuspage for monitoring, according to runsonwhat (October 2026). runsonwhat found Atlassian Statuspage through a subdomain that points at Atlassian Statuspage and a DNS verification record. Atlassian Statuspage is used by 6,695 companies runsonwhat tracks.
Does Castle Learning use Cloudflare?
Yes. runsonwhat found Cloudflare at Castle Learning through DNS records that point at Cloudflare and code on castlelearning.com. Cloudflare is a CDN & Edge tool used by 708,870 companies runsonwhat tracks.
Does Castle Learning use AI tools?
Yes. runsonwhat has found Anthropic at Castle Learning; Anthropic, for example, through a DNS verification record for Anthropic. AI services called only from servers leave no public trace, so Castle Learning may use more AI tools than these.
How does runsonwhat know what Castle Learning uses?
runsonwhat reads public records only. Of the 8 tools at Castle Learning, 5 were found through DNS records, 2 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 castlelearning.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.