calibre - Ebook manager, viewer & converter
SaaS 1000 - Free exportable list of the fastest growing SaaS companies
FBReader - FBReader is an e-book reader for various platforms. Features:
Look at that SaaS - Inspiration and resources for SaaS founders
Google Play Books - Google Play Books lets you search, preview, and buy millions of books using Google Book Search.
Inside SaaS Sales - 1000+ sales emails and voicemails from top SaaS companies