XML plugins for Eclipse

I'm looking for a good, GPL'ed (or CPL'ed) XML eclipse plugin.

First, I tried SolarEclipse, but didn't like it because it couldn't save a simple modified xml.

Then (after uninstall SolarEclipse), I tried X-men. It simply didn't show his face up to me :(

After, I decided to experiment black-sun and it's XML editor seems to be okay, althought somebody has written that its unstable.

JBOSS + Struts + Eclipse

I found this article when I found that plugin below may cause problems in future because it would expire after 1 month.

I'm using

• jakarta-struts-1.1
• jboss-3.2.5
• jboss-ide-1.3.0
• eclipse-3.0RC3

At Modify Project Properties in topic 5., i didn't find javax.servlet.jar at JBOSS_HOME. Instead, i've imported ECLIPSE_HOME/plugins/org.eclipse.tomcat_4.1.30/servlet.jar, and all went well.

When beggining to read page 4, the problems tab (or whatever it is called in eclipse3.0) is full of errors (precisely, 10 errors). After the XDoclet configuration and run, all errors are fixed.