MyEclipse  For J2EE development. Note: I primarily use it as a JSP, Javascript, CSS, TLD, DTD editor XMLBuddy For XML file editing. Jalopy (commercial, latest stable version: 1.2) RegEx Tester Install it if you're planning on using Regular expressions a lot in your development.
 
Easy Struts  URL:  http://easystruts.sourceforge.net/eclipse/updates/site.xml Spring UI plugin. URL: http://www.springframework.org/spring-ide/eclipse/ Easy Explorer. URL: http://easystruts.sourceforge.net/eclipse/updates/site.xml Velocity.  URL: http://propsorter.sourceforge.net/veloeclipse FreeMarker URL: http://www.freemarker.org/eclipse/update  JBoss-IDE  URL: http://jboss.sourceforge.net/jbosside/updates Hibernate Synchronizer URL:  http://www.binamics.com/hibernatesync Python URL: http://pydev.sourceforge.net/updates/ Perl URL: http://e-p-i-c.sourceforge.net/updates Properties Editor  URL:http://propedit.sourceforge.jp/eclipse_plugins/3/ Log4E   URL:  http://log4e.jayefem.de/update Spindle URL: http://spindle.sourceforge.net/updates Tapestry Palette  URL:http://www.mjhenderson.com/updates
PS:For quick access to Windows explorer from within Eclipse. Install it using Eclipse's Update Manager: Help -> Software Updates -> Find and Install... -> Search for new features to install -> Add Update Site...

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