Rainbow's tech stack
What does Rainbow use?
Rainbow (openrainbow.com) uses at least 20 tools we can see from public records, including Vercel for hosting, Microsoft 365 for email and documents, Zendesk for customer support and Google Analytics for analytics. Last checked .
- Industry
- Telecommunications
- Size
- 10,000+ employees
- Based in
- Colombes, France
- Company page
- Tools found
- 20
- Categories
- 13
- Layers
- 5 of 5
- Last checked
- Oct 2026
Rainbow'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
2 tools, where the bytes are served from
Hosting & Cloud
DNS
Application
5 tools, what the product is built with
Data & Observability
5 tools, what they measure and store
Go-to-market
4 tools, how they find and keep customers
Ads & Pixels
Support & Docs
Company Ops
4 tools, what the team runs on day to day
Email Delivery
Workspace
Security & Compliance
Companies like Rainbow also use
Tools common among companies with a similar stack that we haven't found at Rainbow.
Companies with a stack like Rainbow's
Ranked by shared tools, with rare tools counting more.
DIDWW Ireland LimitedTelecommunications · 51–200 people9in common
Voip.msTelecommunications · 51–200 people7in common
TeachstoneEducation Management · 51–200 people7in common
Avarda BankFinancial Services9in common
IdemeumSecurity · 1–10 people5in common
FastAPI CloudInternet · 1–10 people2in common
CCLI®Music · 51–200 people8in common
PlaudSoftware · 51–200 people12in common
More Telecommunications companies
Other Telecommunications companies we've checked.
Rainbow tech stack FAQ
What tools does Rainbow use?
As of October 2026, runsonwhat has found 20 tools at Rainbow (openrainbow.com) in public records. Edge & Hosting: Vercel and Gandi. Application: jQuery, Google Fonts and Font Awesome. Data & Observability: Google Analytics, Google Tag Manager and Hotjar. Go-to-market: Google Ads, Mailchimp and Zendesk. Company Ops: Microsoft 365, OneTrust and Mailjet. Last checked October 3, 2026.
What cloud does Rainbow run on?
Rainbow uses Vercel for hosting and cloud infrastructure, according to runsonwhat (October 2026). runsonwhat found Vercel through a DNS verification record for Vercel. Vercel is used by 45,201 companies runsonwhat tracks.
What email provider does Rainbow use?
Rainbow uses Microsoft 365 for email and office software, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365. Microsoft 365 is used by 693,185 companies runsonwhat tracks.
What does Rainbow use for customer support?
Rainbow uses Zendesk for customer support and documentation, according to runsonwhat (October 2026). runsonwhat found Zendesk through a subdomain that points at Zendesk and email records. Zendesk is used by 39,904 companies runsonwhat tracks.
What analytics tools does Rainbow use?
Rainbow uses Google Analytics for analytics, alongside Google Tag Manager, Hotjar and Contentsquare, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on openrainbow.com. Google Analytics is used by 798,923 companies runsonwhat tracks.
What marketing software does Rainbow use?
Rainbow uses Mailchimp for marketing, according to runsonwhat (October 2026). runsonwhat found Mailchimp through email records that authorize Mailchimp. Mailchimp is used by 110,872 companies runsonwhat tracks.
Does Rainbow use jQuery?
Yes. runsonwhat found jQuery at Rainbow through jQuery code on openrainbow.com. jQuery is a Frontend tool used by 842,821 companies runsonwhat tracks.
Which companies have a tech stack similar to Rainbow's?
The companies with the stacks most like Rainbow's are DIDWW Ireland, Voip.ms, Teachstone and Avarda Bank, according to runsonwhat (October 2026). Each shares 7 to 9 tools with Rainbow, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.
How does runsonwhat know what Rainbow uses?
runsonwhat reads public records only. Of the 20 tools at Rainbow, 10 were found through code on openrainbow.com, 4 through email records, 3 through DNS records, 2 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 openrainbow.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.