Development

• Bed - Binary EDitor
  This is a menu-driven Binary Editor. It contains copy, paste, undo, redo, search, replace, marks, marklisting, mark stepping, ASCII, decimal, hexadecimal, binary and octal data formats. The program ...
  
• emacs
  Very sofisticated text processor with support of LISP; can be used as a development environment. Includes several other useful tools as web browser, e-mail and news client, calendar, games and even ...
  
• XEmacs
  Emacs for X ...
  
• CoffeeCup HTML Editor
  The CoffeeCup HTML Editor is the fastest, easiest, most full featured HTML Editor available. It comes with over 125 Javascripts, a DHTML Menu Wizard, Thousands of Graphics and built-in Uploading too....
  
• JOE - Joe's own editor
  Text editor for unix console. Much more BFU friendly than Vi[m]. ...
  
• SciTE
  SciTE is a SCIntilla based Text Editor. ...
  
• Another Easy Editor
  An easy to use text editor. Intended to be usable with little or no instruction. Provides both a terminal (curses based) interface and native X-Windows interface (in which case the executable is call...
  
• Conglomerate
  Conglomerate is a free user-friendly XML editor. It attempts to hide the gory details of XML from the end-user. It can support any XML file format, but so far we have been concentrating on DocBook su...
  
• oXygen XML editor
  oXygen is an XML editor that supports any XML document, and works with XML Schemas, DTDs, Relax NG schemas, and NRL Schemas. It has powerful transformation support that allows you to edit XSLT and XS...
  
• Fred
  Fred is a small, fast clone of the standard DOS editor, edit.com. ...
  
• Prefedit
  Preferences Editor is small utility to browse and edit the user and system preferences, which are accessible via the Java 1.4 package java.util.prefs. This could be useful for interactive tests whe...
  
• RText
  RText is a fully customizable programmer's text editor. Some of its features include syntax highlighting, editing multiple documents at once, printing and print preview, find/ replace/find in files d...
  
• Xcoral
  Xcoral is a multi-window mouse-based text editor for Unix/X11 with syntax highlighting andauto-indentation. A built-in browser enables you to navigate through C functions, C++ and Java classes, metho...
  
• Vex
  Vex is an editor for XML documents. The "visual" part comes from the fact that Vex hides the raw XML tags from the user, providing instead a wordprocessor-like interface. Because of this, Vex is best...
  
• Moleskine
  Moleskine is a source code editor for the GNOME desktop written in Python. Moleskine uses the multi platform Scintilla editing widget, wrapped in GtkScintilla to provide Python bindings and a nicer, ...
  
• Cream
  VIM macros that make the VIM easier to use for beginners. Cream's motto is "Cream makes the powerful Vim text editor easy!". It brings a completely different look and feel to the VIM for those who ar...
  
• Stani's Python Editor
  Spe is a Python IDE with auto-indentation, auto completion, syntax coloring, syntax highlighting, a class explorer, source index and many other features. ...
  
• XAmple XML Editor
  Java-based XML editor analyzes XML schemas generates document-specific GUIs. ...
  
• Eddi
  Eddi is a very powerfull and easy to use editor. It is written by a person who did not like emacs, but needed a big editor nevertheless. Eddi has the advantage that it is extremely intuitive and ther...
  
• Cle
  Cle is a Command Line Editor. It provides the editing/history/completion commands of the readline package to any line-oriented Unix command. ...
  
• Jed
  JED is a freely available text editor for Unix, VMS, MSDOS, OS/2, BeOS, QNX, and win9X/NT platforms. Although it is a powerful editor designed for use by programmers, its drop-down menu facility make...
  
• Bitflux Editor
  Bitflux Editor is a browser-based WYSIWYG XML editor which is written in JavaScript and uses XML, XSLT, and CSS for rendering. ...
  
• GenDoc
  GenDoc (formerly GenDiapo) is an XML Editor based on a existing project, MerlotXML. It can use two kinds of plugins (DTD and/or action). The DTD plugin can be used to customize the editor for a DTD, ...
  
• THE (The Hessling Editor)
  THE is a text editor modelled on the VM/CMS text editor XEDIT with the bestfeatures of Mansfield Software's Kedit for DOS ...
  
• Woody
  Woody is a tree editor, also known as an outliner. It is similar to a text editor, but allows you to organize your information in a hierarchy. ...