I make 3D product mockups for my all clients, but I wanted to offer something valuable for other indie authors and self-publishers as well. So I've developed a free online tool for you to easily generate your own 3D book mockups to use in your online book promotion and marketing.
All you need is your cover image, and something for the spine. (If you only have the cover, you can just use the over for all sides and it will look OK - otherwise just choose an angle that doesn't show the spine or book).
Update! My 3D book cover generator tool isn't working right now, so use this one instead, provided by BoxShot. You need an image for the front, back and spine - but you can just use the front cover for all three, and rotate the book cover so it doesn't show the spine or back.