Seaside is the open source framework of choice for developing sophisticated and dynamic web applications. Seaside uses the power of objects to master the web. With Seaside web applications is as simple as building desktop applications. Seaside lets you build highly dynamic and interactive web applications. Seaside supports agile development through interactive debugging and unit testing. Seaside is based on Smalltalk, a proven and robust language implemented by different vendors. Seaside is now available for all the major Smalltalk including Pharo, Squeak, GNU Smalltalk, Cincom Smalltalk, GemStone Smalltalk, and VA Smalltalk.
Having somewhat of a soft spot for Smalltalk, I've wanted to explore the Seaside web development framework for a while. This book is a quite comprehensive introduction, with lots of code and useful little examples.
This book shows the extreme coolness of seaside: easy to use, fun and powerful. It covers a lot of material without being too shallow. Highly recommendable!