Ramaze The Web Framework for Rubyists

Just like ORMs Ramaze has support for a wide range of template engines it will be able to run Ramaze just fine.
Sinatra
NYNY A SMALL & POWERFULL WEB FRAMEWORK
Padrino – The Elegant Ruby Web Framework
Cuba | Microframework for web development
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Ruby Grape An opinionated framework
Camping, a Ruby Microframework
Lotus by lotus
Celluloid Actor-based Concurrent
Scorched – Light-weight Ruby Web Framework
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Hanami The web
Pakyow Web Framework
Nancy Frame work