ANSI/NISO Z39.86 Validator - ZedVal
ZedVal, also known as the ANSI/NISO Z39.86 Validator, is a DAISY 3 content validator. It was designed to validate Audio NCX books to support their conformance with DAISY 3, officially the ANSI/NISO Z39.86 Standard. More info at the project site.
Latest Release: ZedVal 2.1
This version fixes an issue that caused books containing the MathML 'annotation' element to be incorrectly reported as invalid.