What are the various Struts tag libraries ?

Bean tag library (struts-bean.tld)

Tags for accessing JavaBeans and their properties.

HTML tag library (struts-html.tld)

Tags to output standard HTML, including forms, text boxes, checkboxes, radio buttons etc..

Logic tag library (struts-logic.tld)

Tags for generating conditional output, iteration capabilities and flow management

Tiles or Template tag library (struts-template.tld , struts-tiles.tld)

For the application using tiles

Nested tag library

For using the nested beans in the application