1. Jakarta Project - Taglibs
Check out various custom open source JavaServer Pages tags and Web Publishing tool extensions which support JSP. Includes recommended reading.
http://jakarta.apache.org/taglibs http://jakarta.apache.org/taglibs

2. Welcome to JSPTags.com
Directory of resources related to JavaServer Pages, Servlets and Java with special interest in JSP Tag Libraries.
http://jsptags.com http://jsptags.com

3. Jspin: JSP tutorials, examples, JSP hosting, code, tags, & beans
...to the JSP Resource Index. We are the definitive guide for JSP web applications, tag libraries, java beans, scripts, and other related resources...
http://www.jspin.com http://www.jspin.com

4. Java Server Front-end Development
JSP products, servlets, and servlet authoring tools, and JSP/servlet resource centers available on the web: JSP beans and tag libraries.
http://www.javaskyline.com/dev.html http://www.javaskyline.com/dev.html

5. Introduction to JSP Standard Tag Library (JSTL)
This introductory tutorial on JSTL presents the pros and cons of JSTL versus JSP scriptlets and then walks through installing and configuring JSTL.
http://java.about.com/od/beginningjava/l/aa_jstl_intro_2.htm http://java.about.com/od/beginningjava/l/aa_jstl_intro_2.htm [ About.com ]

6. SQLTags
A JSP tag generator that builds a custom JSP tag for every table in relational database. [Freeware]

http://www.sqltags.org http://www.sqltags.org

7. Tag Libraries
Log Tag Library JSP tag-level access to Log4J, (originally named Debug Tag Library) Math Tag Library Expression Handler and Figure to Word Tag...
http://jsptags.com/tags http://jsptags.com/tags

8. Core Servlets and JavaServer Pages (JSP)
Home page for JSP 1.1 book from Sun Microsystems Press and Prentice Hall. Topics include coverage custom tag libraries and Apache Tomcat configuration and setup details. Also includes ...
http://www.corejsp.com http://www.corejsp.com

9. Tag Libraries Tutorial
Tag ... JSP Page ... Tag Handler ... Tag Extra Info Class ... A Template Mechanism ... JSP Page ... Tag Handlers ... Web Application Deployment...
http://java.sun.com/products/jsp/tutorial/TagLibrariesTOC.html http://java.sun.com/products/jsp/tutorial/TagLibrariesTOC.html

10. SOFIA - Salmon Open Framework for Internet Applications
A J2EE based class and tag library for building database driven web applications. Conceptually it's similar to other open source frameworks like Apache Struts. What makes SOFIA stand out ...
http://www.salmonllc.com/website/Jsp/vanity/Sofia.jsp http://www.salmonllc.com/website/Jsp/vanity/Sofia.jsp

11. Java 2 Platform EE v1.3: Interface Tag
...javax.servlet.jsp.tagext Interface Tag All Known Subinterfaces: BodyTag, IterationTag ... public interface Tag...
http://java.sun.com/j2ee/sdk_1.3/techdocs/api/javax/servlet/jsp/tagext/Tag.html http://java.sun.com/j2ee/sdk_1.3/techdocs/api/javax/servlet/jsp/t

12. JSPTags
Check out this directory containing sections for tag and bean libraries, as well as industry news, recommended reading, and discussion forums.
http://www.jsptags.com http://www.jsptags.com

13. onJava.com - Advanced Features of JSP Custom Tag Libraries
Read an article explaining advanced JavaServer Pages (JSP) features and how to use them.
http://www.onjava.com/pub/a/onjava/2001/01/18/jsptags.html http://www.onjava.com/pub/a/onjava/2001/01/18/jsptags.html

14. The Jakarta Site - The Jakarta Project -- Java Related Products
Taglibs A collection of JavaServer Pages (JSP) custom tag libraries useful in building web applications Frameworks and Engines...
http://jakarta.apache.org http://jakarta.apache.org

15. uitags Project
An JSP custom-tag library that makes developing friendly UI (user interface) effortless. [Open source, Apache License]

http://uitags.sourceforge.net http://uitags.sourceforge.net