LemonInk

LemonInk lets you sell ebooks through your store. And secure them using social-DRM/watermark.

Book publishers and authors can can benefit from selling their books directly to customers. Thanks to LemonInk it's possible to do that with ebooks as well. LemonInk will securely host and manage your ebook files and allow you to match them with products in your store. Whenever a customer buys an ebook, we'll create a unique copy, digitally signed with their data - both visibly and invisibly. Files are delivered to customers automatically through download links in order details.

• Great support (email us!)
• Customize the watermark so it's just perfect
• Security: your ebooks are never shared without unique digital signature