A node.js addon for Oracle's file id library.

var fileid = require('fileid');

fileid.identify('/home/foo/bar.xls', function (err, details) {

    console.log(details);

});

{ id: 1446, name: 'Microsoft Excel 2000' }

Download the Oracle file id SDK, place the header files in /usr/local/include/fileid and the entire contents of the sdk's redist directory into /usr/local/lib/fileid. Make sure /usr/local/lib/fileid is in $LD_LIBRARY_PATH.

You can download Oracle's tools at the following URL: http://www.oracle.com/technetwork/middleware/content-management/downloads/oit-dl-otn-097435.html