SteamMist
Steam Mist (for the lack of a better name) is a library for interfacing with the Steam Web API. It handles the HTTP requests for you while providing a nice API for you to use.
Have some code samples:
require 'steam_mist'
session = SteamMist::Session.new SteamMist::Connectors::LazyConnector
session.default_arguments.merge! :key => "XXXXXXXXXXXXXXXXXXX", :format => :json
method = session.player_service.get_recently_played_games.with_version(1) \
.with_arguments(:steamid => "76561198025418738")
method.request_uri # =>
# http://api.steampowered.com/IPlayerService/GetRecentlyPlayedGames/v0001/
# ?key=XXXXXXXXXXXXXXXXX&steamid=76561197960434622&format=json
# It's a URI object so #inspect doesn't include the quotes ;)
method.get # => #<SteamMist::Connectors::LazyConnector>
method.get.data # => our json data
rcon = SteamMist::Rcon.new("localhost")
rcon.auth("password") # => true
rcon.send(:data => "echo hello") # =>
# [..., #<SteamMist::Rcon::Packet @body="hello\n", @type=0>, ...]
rcon.close