Ruby Gems is powered by Roda, Sequel and several other ruby gems:

Name Version Summary
bundler 1.13.6
daemons 1.2.6 A toolkit to create and control daemons in different ways
erubi 1.7.1 Small ERB Implementation
eventmachine 1.2.7 Ruby/EventMachine library
io-console 0.4.5 Console interface
json 2.1.0 JSON Implementation for Ruby
mini_portile2 2.3.0 Simplistic port-like solution for developers
nokogiri 1.8.5 Nokogiri (鋸) is an HTML, XML, SAX, and Reader parser
rack 2.0.6 a modular Ruby webserver interface
radiodns 0.1.3 Perform RadioDNS resolutions and service lookups
rake 12.3.1 Rake is a Make-like program implemented in Ruby
roda 3.15.0 Routing tree web toolkit
roo 2.7.1 Roo can access the contents of various spreadsheet files.
rubyzip 1.2.2 rubyzip is a ruby module for reading and writing zip files
sequel 5.13.0 The Database Toolkit for Ruby
sqlite3 1.3.13 This module allows Ruby programs to interface with the SQLite3 database engine (
thin 1.7.2 A thin and fast web server
tilt 2.0.8 Generic interface to multiple Ruby template engines
titleize 1.4.1 Adds String#titleize for creating properly capitalized titles.
yajl-ruby 1.4.1 Ruby C bindings to the excellent Yajl JSON stream-based parser library.