The lxml XML toolkit for Python
Tool to work with XML and HTML from Ruby
Simple REST and HTTP API Client for .NET
XML editor
X3D is the open-standard format for 3D graphics scenes on the Web.
Development toolkit for Web Services and XML data bindings for C & C++
C++ library for creating XLSX files for MS Excel 2007 and above.
Simple XML editor and XSD viewer
C++ wrapper for GNOME libxml2/libxslt
DNG Camera Profile editor
SEPA support tools and library
Music score editor
A library to convert between braille and MathML
Serializes and Deserializes objects into spreadsheets
2D Editor to manage garden or flat plan
Embeddable EXI Processor in C
A simple data serialization format that emphasizes writability
Student examination tool with math expressions parsing capabilities
SOAP and webapp library for C++