ABBU is the native file type for the Mac OS X Address Book, which means that you can only open ABBU files using the Mac Address Book application. However, you can use the iWork Numbers application to ...

The open-source EPUB e-book format is great for sharing books between different readers and making life easier on readers generally--but Amazon's Kindle, the big player, doesn't support it.

Kindle devices appeal to many people. When everything works, they're great. But Amazon is becoming more and more finicky, both in terms of supported formats and the freedom to manage your own books.

Amazon's Kindle was first released in November 2007. This is the most popular strictly e-reader device on the market with 48 percent of 2010 sales, according to a March 2011 report from International ...