extracts meta-data from files of arbitrary type (library)

 GNU libextractor provides developers of file-sharing networks, file managers,
 and WWW-indexing bots with a universal library to obtain meta-data about files.
 .
 Currently, libextractor supports the following formats: HTML, MAN, PS, DVI,
 OLE2 (DOC, XLS, PPT), OpenOffice (sxw), StarOffice (sdw), FLAC,
 MP3 (ID3v1 and ID3v2), OGG, WAV, S3M (Scream Tracker 3), XM (eXtended Module),
 IT (Impulse Tracker), NSF(E) (NES music), SID (C64 music), EXIV2, JPEG, GIF,
 PNG, TIFF, DEB, RPM, TAR(.GZ), LZH, LHA, RAR, ZIP, CAB, 7-ZIP, AR, MTREE, PAX,
 CPIO, ISO9660, SHAR, RAW, XAR, FLV, REAL, RIFF (AVI), MPEG, QT and ASF.
 .
 Also, various additional MIME types are detected. It can also be used to
 compute hash functions (SHA-1, MD5, ripemd160).
 .
 This package contains the library and all plugins.