Packages
com.caucho.ejb  
com.caucho.es The JavaScript compiler package.
com.caucho.jsp  
com.caucho.naming  
com.caucho.regexp Perl 5 Regular Expressions
com.caucho.server.http  
com.caucho.sql  
com.caucho.transaction  
com.caucho.transform Interfaces for XSLT transformations.
com.caucho.util Assorted utilities
com.caucho.vfs Resin's Virtual File System.
com.caucho.xml XML parsing and printing package.
com.caucho.xml.parsers  
com.caucho.xpath Finding and selecting XML nodes using XSL patterns.
com.caucho.xsl The XSLT transformation package.
javax.servlet  
javax.servlet.http  
javax.servlet.jsp  
javax.servlet.jsp.tagext  
javax.xml.parsers Java XML Parsing API (supports SAX 1.0 and DOM 2.0).
org.w3c.dom W3C Standard Document Object Model 2.0
org.xml.sax SAX 2.0 callback parsing API.