Rex's tech stack
What does Rex use?
Rex (rex.app) uses at least 24 tools we can see from public records, including Google Workspace for email and documents, Chatwoot for customer support, Google Analytics for analytics and Stripe for payments. Last checked .
- Industry
- Veterinary
- Size
- 11–50 employees
- Based in
- Germany
- Founded
- 2021
- Company page
- Tools found
- 24
- Categories
- 13
- Layers
- 5 of 5
- Last checked
- Oct 2026
Rex'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
3 tools, what the product is built with
Data & Observability
5 tools, what they measure and store
Flags & Experiments
Go-to-market
11 tools, how they find and keep customers
Website & CMS
Marketing
Ads & Pixels
Support & Docs
Company Ops
4 tools, what the team runs on day to day
Email Delivery
Workspace
Security & Compliance
Rex tech stack FAQ
What tools does Rex use?
As of November 2026, runsonwhat has found 24 tools at Rex (rex.app) in public records. Edge & Hosting: Cloudflare. Application: jQuery, Stripe and Firebase. Data & Observability: Google Analytics, Google Tag Manager and Microsoft Clarity. Go-to-market: Google Ads, Meta Pixel and LinkedIn Insight Tag. Company Ops: Google Workspace, SendGrid and Valimail. Last checked October 30, 2026.
What email provider does Rex use?
Rex uses Google Workspace for email and office software, according to runsonwhat (November 2026). runsonwhat found Google Workspace through email records that authorize Google Workspace and code on rex.app. Google Workspace is used by 407,251 companies runsonwhat tracks.
What does Rex use for customer support?
Rex uses Chatwoot for customer support and documentation, according to runsonwhat (November 2026). runsonwhat found Chatwoot through Chatwoot code on rex.app. Chatwoot is used by 970 companies runsonwhat tracks.
What payment provider does Rex use?
Rex uses Stripe for payments and billing, according to runsonwhat (November 2026). runsonwhat found Stripe through a DNS verification record for Stripe and code on rex.app. Stripe is used by 30,691 companies runsonwhat tracks.
What analytics tools does Rex use?
Rex uses Google Analytics for analytics, alongside Google Tag Manager, Microsoft Clarity and Hotjar, according to runsonwhat (November 2026). runsonwhat found Google Analytics through Google Analytics code on rex.app. Google Analytics is used by 899,912 companies runsonwhat tracks.
What is Rex's website built with?
Rex uses Webflow for its website, according to runsonwhat (November 2026). runsonwhat found Webflow through a DNS verification record for Webflow and code on rex.app. Webflow is used by 35,422 companies runsonwhat tracks.
Does Rex use jQuery?
Yes. runsonwhat found jQuery at Rex through jQuery code on rex.app. jQuery is a Frontend tool used by 925,711 companies runsonwhat tracks.
Which companies have a tech stack similar to Rex's?
The companies with the stacks most like Rex's are Softcontrol, International British Online School, Hoboken Grace and Ariyes Lda, according to runsonwhat (November 2026). Each shares 5 to 12 tools with Rex, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.
How does runsonwhat know what Rex uses?
runsonwhat reads public records only. Of the 24 tools at Rex, 14 were found through code on rex.app, 6 through DNS records, 3 through email records and 1 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and rex.app 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.