runsonwhat

Haystack's tech stack

What does Haystack use?

Haystack (haystack.sh) uses at least 8 tools we can see from public records, including Google Workspace for email and documents, Calendly for sales, Cloudflare for content delivery and Resend for email delivery. Last checked .

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Industry
Engineering, Product and Design
Size
1–10 employees
Based in
New York City, United States
Re-check liveVisit haystack.sh
Tools found
8
Categories
7
Layers
4 of 5
Last checked
Oct 2026

Haystack'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

3 tools, how they find and keep customers

Marketing

Sales & CRM

Company Ops

2 tools, what the team runs on day to day

Email Delivery

Workspace

Companies like Haystack also use

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

Companies with a stack like Haystack's

Ranked by shared tools, with rare tools counting more.

More Engineering, Product and Design companies

Other Engineering, Product and Design companies we've checked.

Haystack tech stack FAQ

What tools does Haystack use?

We've found 8 tools at Haystack (haystack.sh). Edge & Hosting: Cloudflare. Application: Google Fonts. Go-to-market: Calendly. Company Ops: Google Workspace and Resend. Last checked October 2, 2026.

What CRM does Haystack use?

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

What email provider does Haystack use?

Haystack uses Google Workspace for email and documents. We found Google Workspace through email records.

Does Haystack use Cloudflare?

Yes. We found Cloudflare at Haystack through DNS records and website code. Cloudflare is used by 428,012 companies we track.

How does runsonwhat know what Haystack uses?

We read public traces only: Haystack'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.