BigTIFF

BigTIFF is a TIFF-like image file format, which supports larger files and data structures than does TIFF. It is logically almost identical to TIFF, though it is not compatible with it.

Software

 * LibTIFF, starting with version 4.

Sample files

 * ftp://ftp.graphicsmagick.org/pub/tiff-samples/
 * http://awaresystems.be/imaging/tiff/bigtiff/BigTIFFSamples.zip