National Library of New Zealand Metadata Extractor
"The Metadata Extraction
Tool was developed by the National Library of New Zealand to programmatically
extract preservation metadata from a range of file formats like PDF documents,
image files, sound files Microsoft office documents, and many others.
The tool was initially
developed in 2003 and released as open source softtware in 2007. The current
version can be downloaded from the SourceForge download