Notepad++ Plugin Manager [deprecated - now on github]
A multi-language code editor with syntax highlighting and templates.
A C Compiler/Editor for Retro 6809 Machines (Colour Computer/Dragon)
Vim script for text filtering and alignment
An open source gui frontend application for GNU Octave
Browser based code editor, allowing you to code from anywhere
Distraction-free writing in Vim
A free and easy to use batch code editor.
Perform all your vim insert mode completions with Tab
Eddy is a small and easy Edify code editor.
Advanced HTML Code Editor for Tinymce4
Mini Java IDE and Swing builder
A free text/code editor built in C#.
gtk editor for systemverilog
Octave Eclipse GUI
Edit and execute php code
A wysiwyg HTML editor that uses the Mozilla Composer codebase