libungif-bin 4.1.4-4build1 (amd64 binary) in ubuntu feisty

 These are some programs that use libungif to convert images.
 .
 The libungif library is a specially modified version of giflib which is free of
 the Unisys LZW patent. It can read all GIFs, but only write uncompressed GIFs.
 If you need to be able to write compressed GIFs, you can install the giflib
 packages instead.