# What does Under use?

Under (under.io) shows public evidence of 17 tools, according to runsonwhat (last checked 2026-10-31).

- Industry: Financial Services
- Size: 11–50 employees
- Based in: Chicago, United States
- Founded: 2019
- LinkedIn: https://www.linkedin.com/company/underio

## Edge & Hosting

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | Website code |  |
| [Amazon Web Services](https://www.runsonwhat.com/reverse/aws) | Hosting & Cloud | Custom domain |  |
| [Google Cloud](https://www.runsonwhat.com/reverse/gcp) | Hosting & Cloud | DNS records |  |
| [Amazon CloudFront](https://www.runsonwhat.com/reverse/cloudfront) | CDN & Edge | Custom domain |  |
| [Vercel](https://www.runsonwhat.com/reverse/vercel) | Hosting & Cloud | Custom domain, DNS verification records, DNS records, Website code |  |

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [jQuery](https://www.runsonwhat.com/reverse/jquery) | Frontend | Website code |  |
| [Next.js](https://www.runsonwhat.com/reverse/nextjs) | Frontend | Website code |  |
| [Lottie](https://www.runsonwhat.com/reverse/lottie) | 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 |  |
| [Datadog](https://www.runsonwhat.com/reverse/datadog) | Monitoring | Website code |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Ads](https://www.runsonwhat.com/reverse/google-ads) | Ads & Pixels | Website code |  |
| [LinkedIn Insight Tag](https://www.runsonwhat.com/reverse/linkedin-insight) | Ads & Pixels | Website code |  |
| [HubSpot](https://www.runsonwhat.com/reverse/hubspot) | Sales & CRM | Email records, Website code |  |
| [Webflow](https://www.runsonwhat.com/reverse/webflow) | Website & CMS | Website code |  |
| [Apollo.io](https://www.runsonwhat.com/reverse/apollo) | Sales & CRM | Custom domain, Website code |  |

## Company Ops

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

## FAQ

### What tools does Under use?

As of October 2026, runsonwhat has found 17 tools at Under (under.io) in public records. Edge & Hosting: Cloudflare, Amazon Web Services and Google Cloud. Application: jQuery, Next.js and Lottie. Data & Observability: Google Analytics, Google Tag Manager and Datadog. Go-to-market: Google Ads, LinkedIn Insight Tag and HubSpot. Company Ops: Google Workspace. Last checked October 31, 2026.

### What cloud does Under run on?

Under uses Amazon Web Services for hosting and cloud infrastructure, alongside Google Cloud and Vercel, according to runsonwhat (October 2026). runsonwhat found Amazon Web Services through a subdomain that points at Amazon Web Services. Amazon Web Services is used by 146,175 companies runsonwhat tracks.

### What CRM does Under use?

Under uses HubSpot for its CRM, alongside Apollo.io, according to runsonwhat (October 2026). runsonwhat found HubSpot through email records that authorize HubSpot and code on under.io. HubSpot is used by 95,436 companies runsonwhat tracks.

### What email provider does Under use?

Under 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 under.io. Google Workspace is used by 406,772 companies runsonwhat tracks.

### What analytics tools does Under use?

Under uses Google Analytics for analytics, alongside Google Tag Manager, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on under.io. Google Analytics is used by 898,092 companies runsonwhat tracks.

### What is Under's website built with?

Under uses Webflow for its website, according to runsonwhat (October 2026). runsonwhat found Webflow through Webflow code on under.io. Webflow is used by 35,371 companies runsonwhat tracks.

### Does Under use jQuery?

Yes. runsonwhat found jQuery at Under through jQuery code on under.io. jQuery is a Frontend tool used by 925,094 companies runsonwhat tracks.

### How does runsonwhat know what Under uses?

runsonwhat reads public records only. Of the 17 tools at Under, 10 were found through code on under.io, 4 through subdomains that point at the vendor, 2 through email records and 1 through DNS records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and under.io about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/under.io (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.