iCal support for Ruby
Rcal provides Ical parsing and generation in Ruby. Loads of information is available in the Rdoc; I suggest starting with rcal.rb.
Interact with CalDAV via Ruby
icalendar.rb main repository
A web console for Rack apps.
A calendar aggregator
Ruby on Rails
Recurring events library for Ruby. Enumerable recurrence objects and convenient chainable interface.
Bellingham Rubyists
RSS reading and writing
Extends the Time class with methods for parsing and conversion
Racc is an LALR(1) parser generator. It is written in Ruby itself, and generates ruby programs.
Documentation Project for Rails
A simple calendar gem example with Rails 6
Rails 4.2+ templating system with JSON, XML and Plist support.
Generate RBS files from JSON Schema
Quelques fonctionnalités de Ruby - par l'exemple