- ePub An ebook format used by Adobe Digital Editions, Apple iBookstore (iPad, iPhone, and iPod), Barnes & Noble, Google Editions, Sony, Borders Books, Kobo, and just about everyone else EXCEPT Amazon.com, including public libraries through OverDrive. EPUB files can also be opened on a computer with various free programs including Calibre, Stanza Desktop, Okular, and many more.
- Mobi (Mobipocket), the format owned by Amazon.com and used by the Kindle, which has about 70% of the ebook market. DRM-free Mobi can read by the Kindle, Mobipocket Reader, as well as some other e-reader devices. Two other notable free programs that can open MOBI files are Calibre and Stanza Desktop. MOBI files can also be read by many smartphones that support the format.
- Pdf Programs like Adobe Reader will open PDF files, as will programs like Foxit Reader, Nitro PDF Reader, SumatraPDF, and many more. Apps are also available on many smartphones to view PDF files.
If you need further assistance determining the format that works for your device, please refer to your User’s Guide.