Aperture - Java framework for getting data and metadata

Aperture is a Java framework for extracting and querying full-text content and metadata from various information systems. It could crawl and extract information from File system, Websites, Mail boxes and Mail servers. It supports various file formats like Office, PDF, Zip and lot more. Metadata information is extracted from image files. Aperture has a strong focus on semantics, metadata extracted could be mapped to predefined properties.