runsonwhat

Semsei's tech stack

What does Semsei use?

Semsei (semsei.io) uses at least 7 tools we can see from public records, including Vercel for hosting, Calendly for sales, Clerk for sign-in and Resend for email delivery. Last checked .

“Semsei prioriza clics e intención de búsqueda, no impresiones vanidosas. Titles, metas y páginas que convierten el snippet en anuncio. SEO medible.”

Re-check liveVisit semsei.io
Tools found
7
Categories
7
Layers
4 of 5
Last checked
Oct 2026

Semsei's stack, layer by layer

Each tool links to the other companies we've found using it. The label says what kind of public trace gave it away.

Edge & Hosting

1 tool, where the bytes are served from

Hosting & Cloud

Application

3 tools, what the product is built with

Frontend

Auth & Identity

AI

Go-to-market

2 tools, how they find and keep customers

Marketing

Sales & CRM

Company Ops

1 tool, what the team runs on day to day

Email Delivery

Companies like Semsei also use

Tools common among companies with a similar stack that we haven't found at Semsei.

Companies with a stack like Semsei's

Ranked by shared tools, with rare tools counting more.

Semsei tech stack FAQ

What tools does Semsei use?

We've found 7 tools at Semsei (semsei.io). Edge & Hosting: Vercel. Application: Next.js and Clerk. Go-to-market: Calendly. Company Ops: Resend. Last checked October 2, 2026.

What cloud does Semsei run on?

Semsei uses Vercel for hosting. We found Vercel through custom domain, DNS verification records, DNS records and website code.

What CRM does Semsei use?

Semsei uses Calendly for sales and CRM. We found Calendly through website code.

Does Semsei use Vercel?

Yes. We found Vercel at Semsei through custom domain, DNS verification records, DNS records and website code. Vercel is used by 18,302 companies we track.

How does runsonwhat know what Semsei uses?

We read public traces only: Semsei's DNS and email records, certificate logs, the code its website loads, and published subprocessor lists. A tool is listed only when a direct record backs it up. DNS is rechecked weekly and the website monthly.

We read public traces only: DNS and email records, certificate logs, website code and published subprocessor lists. A tool is listed when a direct record backs it up, and dropped when a recheck no longer finds it. Is this your company? See how to opt out.