sinatra-rake-routes 
rake routes command for Sinatra applications for printing out all defined routes.
Usage
Install by adding the following to your Gemfile:
gem 'sinatra-rake-routes'Add the below code to your Rakefile. Make sure to require sinatra-rake-routes/tasks after the :configure_routes task is defined, otherwise it won't be picked up correctly.
# Rakefile
task :configure_routes do
require "sinatra-rake-routes"
# Tell SinatraRakeRoutes what your Sinatra::Base application class is called:
require './my_app'
SinatraRakeRoutes.set_app_class(MyApp)
end
require "sinatra-rake-routes/tasks"Example output
bundle exec rake routes
POST
/users
/users/:user_id/messages
GET
/users/:user_id
/users/:user_id/messages
/users/:user_id/messages/:message_id
HEAD
/users/:user_id
/users/:user_id/messages
/users/:user_id/messages/:message_id
PUT
/users/:user_id
/users/:user_id/messages/:message_id
DELETE
/users/:user_id