Prosit Software has released iDictionary, an application that can upload a dictionary and/or thesaurus onto iPod digital media players. iDictionary utilizes the Oxford dictionary available with Mac OS X 10.4, along with filtering and optimization techniques to create a dictionary or thesaurus that can fit on an iPod. The dictionary/thesaurus is displayed using the built-in "Notes" feature, which is available on third-generation or newer iPods. The software includes an array of options enabling users to customize the dictionary to exclude words which match specified criteria, saving space that can be used to store music, photos, or video files. Users running iPodLinux can view both a dictionary and a thesaurus without limitation, because iPodLinux does not impose a 1,000 file viewing limit, as does Apple's "Notes" software. iDictionary is priced at $7, and all future upgrades are free for registered users.