QXmlEdit is a simple XML editor based on qt libraries. Its main features are unusual data visualization modes, nice XML manipulation and presentation and it is multi platform. It can split very big XML files into fragments, and compare XML and XSD files. It was born on Google code (https://code.google.com/p/qxmledit).
Latest release is 0.9.6 tagged on January 2017.
Downloads are hosted on sourceforge.net: https://sourceforge.net/projects/qxmledit/files. Source code packages and binary installers for MacOS and Windows are available.
QT libraries version 4.8 or higher are required. QT 5 is supported.