Alfred is an application launcher and productivity application for Mac OS X. Alfred is free, though an optional paid upgrade ('Powerpack') is available.Using a keyboard shortcut chosen by the user, Alfred provides a quick way to find and launch applications and files on the Mac or to search the web both with predefined keywords for often-used sites such as Amazon.com, IMDB, Wikipedia and many others, with the ability to add users' custom searches for the sites most applicable to them.