Relax NG Tools

Validators:
- Jing
- Libxml2
- RNV - supports the compact syntax only
- See http://relaxng.org/#validators for more.
XML editors supporting Relax NG
- Firedocs - Firefox plug-in
- XML Operator - OSS (BSD Licence)
- <oXygen/> xml editor - commercial
- ...
- See http://relaxng.org/#editors for more