http://orbeon.com/ has a very good platform to build XForms based web-application.
This is very suitable for an ANLIC Metadata Editor which should have the same or more functionality than xMET (eXtensible Metadata Editing Tool) http://www.mymaps.gov.au/xmet/1.0t/xmet-setup.exe
Other XForms implementation:
- AJAXForms, XSLTForms, betterFORM, Chiba and Orbeon Forms
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