I love jEdit. Some plugins require other plugins to work so I"m only naming off some of the main ones which of course jEdit will tell you what others ones to grab that you'll need. Ones I like and use...
Ant, Ant Helper, Dot Complete, Buffer List, CheckStyle, Editor Scheme, Error List, IRC, Jalopy, JImporter, JBrowse, Line Guides, Project Viewer, Sessions, Spell Check, Switch Buffer, Whitespace, XML, XML Indenter, Refactor, Text Tools
(other ones also get installed with some of these like console, jane, code aid, etc.).
