# What does Cesara use?

Cesara (cesara.com) shows public evidence of 11 tools, according to runsonwhat (last checked 2026-11-09).

- Industry: Healthcare
- Size: 1–10 employees
- Based in: San Francisco, United States

## Edge & Hosting

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | DNS records, Email records, Website code |  |
| [Vercel](https://www.runsonwhat.com/reverse/vercel) | Hosting & Cloud | Custom domain |  |

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Anthropic](https://www.runsonwhat.com/reverse/anthropic) | AI | DNS verification records |  |
| [OpenAI](https://www.runsonwhat.com/reverse/openai) | AI | DNS verification records |  |
| [SvelteKit](https://www.runsonwhat.com/reverse/sveltekit) | Frontend | Website code |  |

## Data & Observability

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Tag Manager](https://www.runsonwhat.com/reverse/gtm) | Analytics | Website code |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Cal.com](https://www.runsonwhat.com/reverse/calcom) | Sales & CRM | Certificate records | 2026-10 |

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

## Recent changes at Cesara

- 2026-10-29: started using [Cal.com](https://www.runsonwhat.com/reverse/calcom)

## FAQ

### What tools does Cesara use?

As of November 2026, runsonwhat has found 11 tools at Cesara (cesara.com) in public records. Edge & Hosting: Cloudflare and Vercel. Application: Anthropic, OpenAI and SvelteKit. Data & Observability: Google Tag Manager. Go-to-market: Cal.com. Company Ops: Microsoft 365, Google Workspace and Amp. Last checked November 9, 2026.

### What cloud does Cesara run on?

Cesara uses Vercel for hosting and cloud infrastructure, according to runsonwhat (November 2026). runsonwhat found Vercel through a subdomain that points at Vercel. Vercel is used by 53,887 companies runsonwhat tracks.

### What sales tools does Cesara use?

The sales tools runsonwhat has found at Cesara are Cal.com (November 2026); no CRM shows up in Cesara's public records. runsonwhat found Cal.com through certificate records for Cal.com, in use since at least October 2026. Cal.com is used by 955 companies runsonwhat tracks.

### What email provider does Cesara use?

Cesara 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 739,101 companies runsonwhat tracks.

### What analytics tools does Cesara use?

Cesara uses Google Tag Manager for analytics, according to runsonwhat (November 2026). runsonwhat found Google Tag Manager through Google Tag Manager code on cesara.com. Google Tag Manager is used by 516,858 companies runsonwhat tracks.

### How long has Cesara used Cal.com?

Cesara has used Cal.com since at least October 2026, going by the first public certificate of the cesara.com subdomain that points at Cal.com.

### Does Cesara use Cloudflare?

Yes. runsonwhat found Cloudflare at Cesara through DNS records that point at Cloudflare and email records. Cloudflare is a CDN & Edge tool used by 737,816 companies runsonwhat tracks.

### Does Cesara use AI tools?

Yes. runsonwhat has found Anthropic and OpenAI at Cesara; Anthropic, for example, through a DNS verification record for Anthropic. AI services called only from servers leave no public trace, so Cesara may use more AI tools than these.

### Has Cesara changed tools recently?

Yes. On runsonwhat's rechecks, Cesara started using Cal.com (latest on October 29, 2026). A change counts only between two checks of cesara.com done the same way.

### Which companies have a tech stack similar to Cesara's?

The companies with the stacks most like Cesara's are Prime Intellect, Inmunotec Lab, OpenRelay and Personabox, according to runsonwhat (November 2026). Each shares 3 to 10 tools with Cesara, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

### How does runsonwhat know what Cesara uses?

runsonwhat reads public records only. Of the 11 tools at Cesara, 6 were found through DNS records, 2 through code on cesara.com, 1 through email records, 1 through subdomains that point at the vendor and 1 through certificate records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and cesara.com about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/cesara.com (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.