Hi there
I'm resently obsessed with the Page flip effect,yes I did use the word "obsessed" from a enthusiast's view. In brief, page flip is a special effect that makes reading online more like reading a real book. So many brilliant jobs have been done in this area, I just list the typical ones, and hope this would help any of you.

http://www.ａｘｍａｇ.com
The delicate one that supports all basic effect. Both simulation and Vector technology are applied to make realistic 3D animated page-flip. Pages are processed for high speed online loading, with few seconds all pages will be cashed.I experience the smoothness of reading online from it.
Demo: http://www.ａｘｍａｇ.com/demo.html

http://www.pixelwit.com/blog/page-flip/
The open source designed by Sean O'Shell in 2002, it can be the basis and original of Page-flip.Streaming media thechnology was used for easy document anagement. As time goes by, it may not as glister as the *****, I still
admire the work he had done.
Demo: http://www.pixelwit.com/flip/PageFlip.html

http://www.issuu.com
Aimed at sharing magazines, issuu is a terrific platform of online reading. They make page flip in a different way that focus on reading experience.Dynamic thumbnails and 3 typical view mode are supported. While, issue turn the pages more like a robot without dragging corner feature.
Demo: http://www.issuu.com/snooka/docs/webrvano2

In addition,page-flip.com makes good effect with higher cost. swftools.org develops open source and makes freeware.

That's all I got, fell free to feed me back any comments or sugestions.thanks !