A simple interface for working with TeX documents
Editor for Fixed Width, Csv and Existing Xml files.
PDFCraft is a free, privacy-focused PDF toolkit
XML editor
An integrated writing environment for creating LaTeX documents
C++ Qt ORM (Object Relational Mapping) and ODM library
XMLJ is a Java XML Editor and validator project.
Another drawing editor for LaTeX with PSTricks & TikZ
SC is a C based meta/programming language/environment
Kile is a feature-rich LaTeX editor
An easy to edit webpage template / cheatsheet
An editor for structured documents
Editor for simple (only one record type) Csv Files.
A hex editor Eclipse plugin and multi-platform desktop application
Vector drawing program for LaTeX using PSTricks
Music score editor
Emacs editing mode for X12 files