# What does String® use?

String® (string.co) shows public evidence of 5 tools, according to runsonwhat (last checked 2026-10-06).

- Industry: Software
- Size: 11–50 employees
- Based in: Cambridge, United Kingdom
- Founded: 2010
- LinkedIn: https://www.linkedin.com/company/string-

## Edge & Hosting

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Amazon Route 53](https://www.runsonwhat.com/reverse/route53) | DNS | DNS records |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Zendesk](https://www.runsonwhat.com/reverse/zendesk) | Support & Docs | Custom domain |  |

## 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 |  |

## FAQ

### What tools does String® use?

As of October 2026, runsonwhat has found 5 tools at String® (string.co) in public records. Edge & Hosting: Amazon Route 53. Go-to-market: Zendesk. Company Ops: Microsoft 365 and Google Workspace. Last checked October 6, 2026.

### What email provider does String® use?

String® 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 700,596 companies runsonwhat tracks.

### What does String® use for customer support?

String® uses Zendesk for customer support and documentation, according to runsonwhat (October 2026). runsonwhat found Zendesk through a subdomain that points at Zendesk. Zendesk is used by 40,836 companies runsonwhat tracks.

### Does String® use Amazon Route 53?

Yes. runsonwhat found Amazon Route 53 at String® through DNS records that point at Amazon Route 53. Amazon Route 53 is a DNS tool used by 82,928 companies runsonwhat tracks.

### How does runsonwhat know what String® uses?

runsonwhat reads public records only. Of the 5 tools at String®, 3 were found through DNS records, 1 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 string.co about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/string.co (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.