runsonwhat

s13k.dev's tech stack

What does s13k.dev use?

s13k.dev (s13k.dev) uses at least 9 tools we can see from public records, including Proton Mail for email and documents, Cloudflare for content delivery and Let's Encrypt for security. Last checked .

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Tools found
9
Categories
6
Layers
4 of 5
Last checked
Oct 2026

s13k.dev'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

CDN & Edge

Application

2 tools, what the product is built with

AI

Media & UI

Go-to-market

1 tool, how they find and keep customers

Marketing

Company Ops

5 tools, what the team runs on day to day

Workspace

Security & Compliance

Companies like s13k.dev also use

Tools common among companies with a similar stack that we haven't found at s13k.dev.

Companies with a stack like s13k.dev's

Ranked by shared tools, with rare tools counting more.

s13k.dev tech stack FAQ

What tools does s13k.dev use?

We've found 9 tools at s13k.dev (s13k.dev). Edge & Hosting: Cloudflare. Application: Google Fonts. Company Ops: Let's Encrypt, Sectigo and DigiCert. Last checked October 2, 2026.

What email provider does s13k.dev use?

s13k.dev uses Proton Mail for email and documents. We found Proton Mail through DNS verification records and email records.

Does s13k.dev use Cloudflare?

Yes. We found Cloudflare at s13k.dev through DNS records and website code. Cloudflare is used by 498,069 companies we track.

How does runsonwhat know what s13k.dev uses?

We read public traces only: s13k.dev'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.