2. GravatarifyAwesome gravatar support for Ruby (and Rails) - with unique options like Proc's for default images, or support for gravatar.com's multiple host names.
3. Simple enumSimple enum-like field support for ActiveModel (including validations and i18n)
4. entypo-railsRails asset pipeline plugin and icon mappings for the awesome http://www.entypo.com/ icon font.