Ruby is a programming language best known for Ruby on Rails, but also used for Sinatra, Discourse, Redmine and Jekyll-built sites. AIWebsiteDetector reports Ruby from Server banners of Ruby application servers (Phusion Passenger, Puma, Unicorn, Thin, WEBrick), an `X-Powered-By` value naming Ruby or Passenger, a versioned generator tag of a known Ruby application, and from a detected Ruby on Rails site. Behind a proxy that rewrites these headers, Ruby sites show nothing.
Paste any URL to instantly detect whether it was built with Ruby. Our engine checks 2 technical signals.
Ruby is used across many industries. These are the most common website types built on this platform:
Businesses of all sizes
Fast, reliable site building with professional results
Designers and developers
Powerful tools with minimal setup
Startups
Quick launch with scalable infrastructure
Content creators
Beautiful presentation for your work
Every Ruby website leaves distinctive technical fingerprints. Here's what to look for:
Explore how Ruby compares to similar backend framework tools: