The tag libraries supported by JSF are:

1. JavaServer Faces Core Tag Library – This library consists of tags for JavaServer Faces custom actions that are independent of any particular render kit. This has a prefix as ‘f:’ and the URI is http://java.sun.com/jsf/core
2. JavaServer Faces HTML Tag Library –  This library consists of JavaServer Faces component tags for all UIComponent objects in a web application. This has a prefix as ‘h:’ and the URI is  http://java.sun.com/jsf/html
3. JavaServer Faces Facelets Tag Library – This library consists of tags for templating. This has a prefix as ‘ui:’ and the URI is http://java.sun.com/jsf/facelets

In addition to these tag libraries, JSTL Core Tag library and JSTL Functions Tag Library are also supported.