Collaborative document editing using Markdown
[iOS] A fully themeable markdown editor with live syntax highlighting
Music score editor
A simple, general-purpose editor for Linux
Your simple RTF editor completely in Java
Web based File Manager in PHP, Single File and light weight
A typeface designed for source code
jNPad's an simple text editor written in Java.
A community-driven Emacs distribution
A Medium.com WYSIWYG editor clone. A simple inline editor toolbar
JavaScript note taking application with Markdown editor
Simple subtitles editor.
Civilizer - Tool to efficiently manage your data/knowledge/idea
Source code for perl simple text editor.
XML Editor in PHP for editing simple XML files
A C Compiler/Editor for Retro 6809 Machines (Colour Computer/Dragon)
History text
A PlantUML editor written in Qt4
Simple text editor written in Lazarus
regex as a tool, not as a problem
pykte is a simple text editor with support for unicode.
A LaTeX editor with a built-in TeXSample service client
Simple and Advanced Content Management System based on phpnuke.