There are several appendixes.
Appendix A, Ajax Frameworks and Libraries, is a summary of frameworks and libraries supporting Ajax, ranging across many programming languages and licensing models. Appendix B, Setting Up the Code Examples, offers, instructions for setting up the tutorial and demo code on your system. Appendix C, Patterns and Pattern Languages, provides a background on patterns, pattern languages, and Ajax Patterns in that context. Finally, Appendix D, References, lists the texts that are referenced throughout the book.
Appendix A: Ajax Frameworks and Libraries
Appendix B: Setting Up the Code Examples
Appendix C: Patterns and Pattern Languages
Appendix D: References
