Rack router

Provides a model for the HTTP protocol and a tree-based routing syntax.

YARD plugin for documenting programs using the wires event routing framework for Ruby.

PlainRouter is a fast and simple routing engine for Ruby. Using PlainRouter::Method, you can quickly make web application framework like Sinatra. PlainRouter is a porting project of Route::Boom.

TCB gives Rails applications a clean domain language for DDD. Thread-safe event bus, command routing, aggregate pattern, and opt-in event persistence.

SubdomainFu aims to solve the problem of subdomain-based routing and in a unified way, establishing simple conventions for linking between subdomains of a Rails app.