Harlequin - Harlequin is a bookstore that sells paper books as well as eBooks. The store mainly deals in the genre of romance novels.
Kobo Books - Kobo Books is a best in the class eBooks and eReadering apps for many reasons.
Amazon Kindle Store - The Amazon Kindle eBook store is the biggest and most widely used eBook store on the web.
Waterstone's - Waterstone's is an .epub eBook store.
Barnes & Noble NOOK Books - Welcome to the NOOK eBookstore! Browse from Barnes & Noble's 4.5M eBooks to find your next read. Gift yourself or a loved one a NOOK book to download today.
RegexBuddy - RegexBuddy is your perfect companion for working with regular expressions.