# What does Chrestos use?

Chrestos (chrestos.de) shows public evidence of 9 tools, according to runsonwhat (last checked 2026-11-01).

- Industry: Management Consulting
- Size: 51–200 employees
- Based in: Essen, Germany
- Founded: 2006
- LinkedIn: https://www.linkedin.com/company/chrestos-concept

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Anthropic](https://www.runsonwhat.com/reverse/anthropic) | AI | DNS verification records |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | Email records, DNS verification records |  |
| [Apple Business](https://www.runsonwhat.com/reverse/apple) | Workspace | DNS verification records |  |
| [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 |  |
| [1Password](https://www.runsonwhat.com/reverse/1password) | Security & Compliance | DNS verification records |  |
| [Jamf](https://www.runsonwhat.com/reverse/jamf) | Security & Compliance | DNS verification records |  |
| [Parallels](https://www.runsonwhat.com/reverse/parallels) | Dev Tools | DNS verification records |  |

## FAQ

### What tools does Chrestos use?

As of November 2026, runsonwhat has found 9 tools at Chrestos (chrestos.de) in public records. Application: Anthropic. Company Ops: Microsoft 365, Apple Business and Let's Encrypt. Last checked November 1, 2026.

### What email provider does Chrestos use?

Chrestos uses Microsoft 365 for email and office software, alongside Apple Business, according to runsonwhat (November 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365 and a DNS verification record. Microsoft 365 is used by 719,209 companies runsonwhat tracks.

### Does Chrestos use Anthropic?

Yes. runsonwhat found Anthropic at Chrestos through a DNS verification record for Anthropic. Anthropic is a AI tool used by 65,194 companies runsonwhat tracks.

### Does Chrestos use AI tools?

Yes. runsonwhat has found Anthropic at Chrestos; Anthropic, for example, through a DNS verification record for Anthropic. AI services called only from servers leave no public trace, so Chrestos may use more AI tools than these.

### Which companies have a tech stack similar to Chrestos's?

The companies with the stacks most like Chrestos' are Pdw, Watchtower Security, Pela Case and Pls 3rd Learning, according to runsonwhat (November 2026). Each shares 2 to 5 tools with Chrestos, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

### How does runsonwhat know what Chrestos uses?

runsonwhat reads public records only. Of the 9 tools at Chrestos, 8 were found through DNS records, 1 through email records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and chrestos.de about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/chrestos.de (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.