Java+ is a Java preprocessor that adds its features to any Java compiler. It has long, multi-line strings with executable inclusions like Perl or Ruby, optionally segregates Java+ strings into ResourceBundle files, eliminates the need for JSP or ASP and their implied need for Java compilers on deployment servers (a security concern), and adds absolutely no overhead in either space or time. There are graphical and command line interfaces, and a simple, general, and recursive string syntax.
GTK2 Text Editor is a simple Unicode text editor that supports many encodings. It works as a nice Notepad replacement, and can also be used as an encoding converter. It supports multi-level undo, right to left text (as in Hebrew), and other Unicode features. It can auto-close an XML/HTML tag. There is no syntax highlighting yet.