Music score editor
Sticky notes/post-it application for linux
Vim-like editing in Eclipse
A lightweight cross platform programmers' editor
The text editor written in Java.
Configurable Editor in Python
A community-driven Emacs distribution
Real-time collaborative writing
JavaScript note taking application with Markdown editor
Civilizer - Tool to efficiently manage your data/knowledge/idea
Tools for developing qooxdoo Web apps
Cream is a free, easy-to-use configuration of the Vim text editor
Emacs editing mode for X12 files
XML Editor in PHP for editing simple XML files
elvis, a vi text editor clone
Simple Web-based environment for PHP scripting in programming class
A PlantUML editor written in Qt4
General-Purpose PDF Library for Java and .NET
Convert images to Ascii Art, with a lot of options and drawing tools
Emacs extension for interacting with Atlassian Confluence