JByte  

JBYTE is a general template engine used for generating any type of text document from a template. JBYTE is used mostly for generating HTML from JSP or servlets but it can also be used for generating XML, RTF, WML, e-mail text, source code and configuration files.

Price: Free

   zJSP  

zJSP is an experimental translator from JavaServer Pages (jsp's) to Java. It is designed to be used in conjunction with Sun's Java Servlet Developers Kit (JSDK), version 2.0. It should work with any Java Servlet environment compatible with JSDK servlets.

Price: Free

   WebMacro  

WebMacro is a 100% Java open-source servlet framework that enables programmers and designers to work together. WebMacro separates concerns about program code from concerns about the way a page looks: HTML should not clutter up program code, program code should not clutter up HTML, you should OwnYourOwnWork, no-one should have to work through somebody else.

Price: Free