runsonwhat

Erin's tech stack

What does Erin use?

Erin (erinapp.com) uses at least 18 tools we can see from public records, including Netlify for hosting, HubSpot for sales, HubSpot CMS for its website and Greenhouse for hiring and HR. Last checked .

Industry
Human Resources
Size
11–50 employees
Based in
Pittsburgh, United States
Founded
2018
LinkedIn
Company page
Re-check liveVisit erinapp.com
Tools found
18
Categories
13
Layers
5 of 5
Last checked
Nov 2026

Erin's stack, layer by layer

Of 18 tools, 5 came from DNS records, 3 from website code, 3 from DNS verification records and 7 from other records. 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

2 tools, where the bytes are served from

Hosting & Cloud

CDN & Edge

Application

2 tools, what the product is built with

Frontend

AI

Data & Observability

1 tool, what they measure and store

Analytics

Go-to-market

4 tools, how they find and keep customers

Website & CMS

Marketing

Sales & CRM

Company Ops

9 tools, what the team runs on day to day

Email Delivery

Workspace

Collaboration

People & HR

Security & Compliance

Companies like Erin also use

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

Companies with a stack like Erin's

Ranked by shared tools, with rare tools counting more.

More Human Resources companies

Other Human Resources companies we've checked.

Erin tech stack FAQ

What tools does Erin use?

As of November 2026, runsonwhat has found 18 tools at Erin (erinapp.com) in public records. Edge & Hosting: Cloudflare and Netlify. Application: Tailwind CSS. Data & Observability: Google Analytics. Go-to-market: HubSpot, HubSpot CMS and Warmly. Company Ops: Microsoft 365, Google Workspace and SendGrid. Last checked November 6, 2026.

What cloud does Erin run on?

Erin uses Netlify for hosting and cloud infrastructure, according to runsonwhat (November 2026). runsonwhat found Netlify through a subdomain that points at Netlify. Netlify is used by 12,331 companies runsonwhat tracks.

What CRM does Erin use?

Erin uses HubSpot for its CRM, alongside Warmly, according to runsonwhat (November 2026). runsonwhat found HubSpot through a subdomain that points at HubSpot and email records. HubSpot is used by 97,438 companies runsonwhat tracks.

What email provider does Erin use?

Erin 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 731,958 companies runsonwhat tracks.

What analytics tools does Erin use?

Erin uses Google Analytics for analytics, according to runsonwhat (November 2026). runsonwhat found Google Analytics through Google Analytics code on erinapp.com. Google Analytics is used by 903,832 companies runsonwhat tracks.

What is Erin's website built with?

Erin uses HubSpot CMS for its website, according to runsonwhat (November 2026). runsonwhat found HubSpot CMS through a subdomain that points at HubSpot CMS. HubSpot CMS is used by 34,420 companies runsonwhat tracks.

Does Erin use Cloudflare?

Yes. runsonwhat found Cloudflare at Erin through DNS records that point at Cloudflare and email records. Cloudflare is a CDN & Edge tool used by 732,099 companies runsonwhat tracks.

Which companies have a tech stack similar to Erin's?

The companies with the stacks most like Erin's are Subskribe, Datch, FlowFuse and Symend, according to runsonwhat (November 2026). Each shares 5 to 11 tools with Erin, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

How does runsonwhat know what Erin uses?

runsonwhat reads public records only. Of the 18 tools at Erin, 8 were found through DNS records, 3 through code on erinapp.com, 3 through email records, 3 through subdomains that point at the vendor and 1 through website configuration files. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and erinapp.com about 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.