The lxml XML toolkit for Python
Dynamically loaded extension libraries for GNU AWK
XML editor
XMLTV obtains and processes TV listings data
Development toolkit for Web Services and XML data bindings for C & C++
X3D is the open-standard format for 3D graphics scenes on the Web.
EasyML serialization library, to and from XML, similar to Gson
C++ library for creating XLSX files for MS Excel 2007 and above.
Simulatoralive's Java libraries and programs
Music score editor
Minimalistic NCL (nested context language) implementation.
A library to convert between braille and MathML
xslet project provides some XSL libraries and applets.
This program allows embedding books in fb2 format in one, super-book.
2D Editor to manage garden or flat plan