Jaxe is a free XML editor which can be easily adapted to your XML language. User can easily edit XML with this free XML editor. Jaxe is free XML editor designed to help developers to create a simple end-user interface for a given document-oriented XML language.

QXmlEdit is a simple XML editor written in qt4. Its main features are unusual data visualization modes, it has some nice XML manipulation and presentation features and it is multi platform. This is one of the few graphical Open Source XSD viewer.

Cactus Editor is HTML Editor developed by OPG. Well, to be honest, it’s not very useful, especially not on large files. But it’s just a tiny portable HTML editor with a friendly user interface good for editing small HTML files. This application is shareware and free to use.