# What does Circular Brain use?

Circular Brain (circularbrain.io) shows public evidence of 20 tools, according to runsonwhat (last checked 2026-11-04).

- Industry: Environmental Services
- Size: 51–200 employees
- Based in: Jundiaí, Brazil
- Founded: 2019
- LinkedIn: https://www.linkedin.com/company/circular-brain

## 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 | Website code |  |
| [Amazon Route 53](https://www.runsonwhat.com/reverse/route53) | DNS | DNS records |  |
| [Amazon CloudFront](https://www.runsonwhat.com/reverse/cloudfront) | CDN & Edge | Custom domain, Website code |  |

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [jQuery](https://www.runsonwhat.com/reverse/jquery) | Frontend | Website code |  |
| [Font Awesome](https://www.runsonwhat.com/reverse/fontawesome) | Media & UI | Website code |  |
| [Astro](https://www.runsonwhat.com/reverse/astro) | Frontend | Website code |  |

## Data & Observability

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Hotjar](https://www.runsonwhat.com/reverse/hotjar) | Analytics | Website code |  |
| [Mixpanel](https://www.runsonwhat.com/reverse/mixpanel) | Analytics | Website code |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [WordPress](https://www.runsonwhat.com/reverse/wordpress) | Website & CMS | Website code |  |
| [Yoast SEO](https://www.runsonwhat.com/reverse/yoast) | Website & CMS | Website code |  |
| [WhatsApp Business](https://www.runsonwhat.com/reverse/whatsapp) | Support & Docs | Website code |  |
| [Elementor](https://www.runsonwhat.com/reverse/elementor) | Website & CMS | 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 |  |

## 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 |  |
| [Atlassian](https://www.runsonwhat.com/reverse/atlassian) | Dev Tools | DNS verification records |  |

## FAQ

### What tools does Circular Brain use?

As of November 2026, runsonwhat has found 20 tools at Circular Brain (circularbrain.io) in public records. Edge & Hosting: Cloudflare, Amazon Web Services and Amazon Route 53. Application: jQuery, Font Awesome and Astro. Data & Observability: Hotjar and Mixpanel. Go-to-market: WordPress, Yoast SEO and WhatsApp Business. Company Ops: Microsoft 365, Google Workspace and Atlassian. Last checked November 4, 2026.

### What cloud does Circular Brain run on?

Circular Brain uses Amazon Web Services for hosting and cloud infrastructure, according to runsonwhat (November 2026). runsonwhat found Amazon Web Services through Amazon Web Services code on circularbrain.io. Amazon Web Services is used by 147,290 companies runsonwhat tracks.

### What CRM does Circular Brain use?

Circular Brain uses HubSpot for its CRM, according to runsonwhat (November 2026). runsonwhat found HubSpot through email records that authorize HubSpot and code on circularbrain.io. HubSpot is used by 97,277 companies runsonwhat tracks.

### What email provider does Circular Brain use?

Circular Brain uses Microsoft 365 for email and office software, alongside Google Workspace, according to runsonwhat (November 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365. Microsoft 365 is used by 730,362 companies runsonwhat tracks.

### What does Circular Brain use for customer support?

Circular Brain uses WhatsApp Business for customer support and documentation, according to runsonwhat (November 2026). runsonwhat found WhatsApp Business through WhatsApp Business code on circularbrain.io. WhatsApp Business is used by 138,664 companies runsonwhat tracks.

### What analytics tools does Circular Brain use?

Circular Brain uses Hotjar for analytics, alongside Mixpanel, according to runsonwhat (November 2026). runsonwhat found Hotjar through Hotjar code on circularbrain.io. Hotjar is used by 68,432 companies runsonwhat tracks.

### Does Circular Brain use jQuery?

Yes. runsonwhat found jQuery at Circular Brain through jQuery code on circularbrain.io. jQuery is a Frontend tool used by 927,162 companies runsonwhat tracks.

### How does runsonwhat know what Circular Brain uses?

runsonwhat reads public records only. Of the 20 tools at Circular Brain, 12 were found through code on circularbrain.io, 4 through DNS records, 2 through email records, 1 through website configuration files 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 circularbrain.io about monthly.


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