Where can I find an ODF validator to test conformance of my documents?

[qubit1]

I’d like to be able to determine if the ODF files produced by LibreOffice, MS-Word, and other applications are correctly following the spec!

[qubit1]

There’s a validator online here:

• http://odf-validator2.rhcloud.com/odf-validator2/

Another validator (only ODF 1):

• http://opendocumentfellowship.com/validator

Also see fdo#59552