# What does Chelsio Communications use?

Chelsio Communications (chelsio.com) shows public evidence of 10 tools, according to runsonwhat (last checked 2026-10-20).

- Industry: Computer Networking
- Size: 51–200 employees
- Based in: Sunnyvale, United States
- Founded: 1997
- LinkedIn: https://www.linkedin.com/company/chelsio-communications

## 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 |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [WordPress](https://www.runsonwhat.com/reverse/wordpress) | Website & CMS | Website code |  |
| [Meta Pixel](https://www.runsonwhat.com/reverse/meta-pixel) | Ads & Pixels | Website code |  |
| [All in One SEO](https://www.runsonwhat.com/reverse/aioseo) | Website & CMS | Website code |  |
| [Constant Contact](https://www.runsonwhat.com/reverse/constantcontact) | Marketing | Email records |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | Email records |  |

## FAQ

### What tools does Chelsio Communications use?

As of October 2026, runsonwhat has found 10 tools at Chelsio Communications (chelsio.com) in public records. Application: jQuery, Google Fonts and Vimeo. Go-to-market: WordPress, Meta Pixel and All in One SEO. Company Ops: Microsoft 365. Last checked October 20, 2026.

### What email provider does Chelsio Communications use?

Chelsio Communications uses Microsoft 365 for email and office software, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365. Microsoft 365 is used by 712,542 companies runsonwhat tracks.

### What is Chelsio Communications's website built with?

Chelsio Communications uses WordPress for its website, alongside All in One SEO, according to runsonwhat (October 2026). runsonwhat found WordPress through WordPress code on chelsio.com. WordPress is used by 598,933 companies runsonwhat tracks.

### What marketing software does Chelsio Communications use?

Chelsio Communications uses Constant Contact for marketing, according to runsonwhat (October 2026). runsonwhat found Constant Contact through email records that authorize Constant Contact. Constant Contact is used by 13,592 companies runsonwhat tracks.

### Does Chelsio Communications use jQuery?

Yes. runsonwhat found jQuery at Chelsio Communications through jQuery code on chelsio.com. jQuery is a Frontend tool used by 918,254 companies runsonwhat tracks.

### How does runsonwhat know what Chelsio Communications uses?

runsonwhat reads public records only. Of the 10 tools at Chelsio Communications, 8 were found through code on chelsio.com, 2 through email records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and chelsio.com about monthly.


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