# What does CIRCUIT DESIGN, INC. use?

CIRCUIT DESIGN, INC. (cdt21.com) shows public evidence of 15 tools, according to runsonwhat (last checked 2026-10-20).

- Industry: Wireless
- Size: 51–200 employees
- Based in: Hotaka, Japan
- Founded: 1975
- LinkedIn: https://www.linkedin.com/company/circuit-design-inc

## Edge & Hosting

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

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [jQuery](https://www.runsonwhat.com/reverse/jquery) | Frontend | Website code |  |
| [Google Fonts](https://www.runsonwhat.com/reverse/google-fonts) | Media & UI | Website code |  |
| [Vimeo](https://www.runsonwhat.com/reverse/vimeo) | Media & UI | Website code |  |
| [YouTube](https://www.runsonwhat.com/reverse/youtube) | Media & UI | Website code |  |
| [AddToAny](https://www.runsonwhat.com/reverse/addtoany) | Media & UI | 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 |
|---|---|---|---|
| [WordPress](https://www.runsonwhat.com/reverse/wordpress) | Website & CMS | Website code |  |
| [Google Ads](https://www.runsonwhat.com/reverse/google-ads) | Ads & Pixels | Website code |  |
| [Microsoft Ads](https://www.runsonwhat.com/reverse/bing-ads) | Ads & Pixels | Website code |  |
| [All in One SEO](https://www.runsonwhat.com/reverse/aioseo) | Website & CMS | Website code |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Workspace](https://www.runsonwhat.com/reverse/google-workspace) | Workspace | Email records, Website code |  |
| [Cookiebot](https://www.runsonwhat.com/reverse/cookiebot) | Security & Compliance | Website code |  |

## FAQ

### What tools does CIRCUIT DESIGN use?

As of October 2026, runsonwhat has found 15 tools at CIRCUIT DESIGN (cdt21.com) in public records. Edge & Hosting: Cloudflare. Application: jQuery, Google Fonts and Vimeo. Data & Observability: Google Analytics and Google Tag Manager. Go-to-market: WordPress, Google Ads and Microsoft Ads. Company Ops: Google Workspace and Cookiebot. Last checked October 20, 2026.

### What email provider does CIRCUIT DESIGN use?

CIRCUIT DESIGN uses Google Workspace for email and office software, according to runsonwhat (October 2026). runsonwhat found Google Workspace through email records that authorize Google Workspace and code on cdt21.com. Google Workspace is used by 403,699 companies runsonwhat tracks.

### What analytics tools does CIRCUIT DESIGN use?

CIRCUIT DESIGN uses Google Analytics for analytics, alongside Google Tag Manager, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on cdt21.com. Google Analytics is used by 884,814 companies runsonwhat tracks.

### What is CIRCUIT DESIGN's website built with?

CIRCUIT DESIGN uses WordPress for its website, alongside All in One SEO, according to runsonwhat (October 2026). runsonwhat found WordPress through WordPress code on cdt21.com. WordPress is used by 598,994 companies runsonwhat tracks.

### Does CIRCUIT DESIGN use jQuery?

Yes. runsonwhat found jQuery at CIRCUIT DESIGN through jQuery code on cdt21.com. jQuery is a Frontend tool used by 918,383 companies runsonwhat tracks.

### How does runsonwhat know what CIRCUIT DESIGN uses?

runsonwhat reads public records only. Of the 15 tools at CIRCUIT DESIGN, 13 were found through code on cdt21.com, 1 through DNS records and 1 through email records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and cdt21.com about monthly.


---

Source: runsonwhat, https://www.runsonwhat.com/company/cdt21.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.