Scite
SciTE is a SCIntilla based Text Editor. Originally built to demonstrate Scintilla, it has grown to be a generally useful editor with facilities for building and running programs. It is best used for jobs with simple configurations.
Text editing in SciTE works similarly to most Macintosh or Windows editors with the added feature of automatic syntax styling. SciTE can hold multiple files in memory at one time but only one file will be visible.
Araneae
Araneae is an application that will offer text editing for web professionals. Here are some key features of Araneae;
Syntax Highlighting
Unlimited document length
Line numbers
Drag and Drop support for files and images
Instant browser preview, even without saving
Tabbed multi-document interface
Extremely clean and easy-to-use
Interface available in several languages
Framework