jEdit is a programmer's text editor written in Java.
wxMEdit, Cross-platform Text/Hex Editor, Improved Version of MadEdit
CAM XML Editor for XML+JSON+Hibernate+SQL Open-XDX sponsored by Oracle
Create sticky notes, to-do list, journals & reminders all in one app
PDF Library for Developers
A Java class library of general usability
Localization tools built by localizers for localizers
Dynamic Templating Tool
Aspose for Spring.Java provides Aspose API samples for Spring.Java.
FCKeditor (retired)
Library of linguistic tools
A prototype extensible XML editor based on Mozilla technology