IMP is a file archiver capable of compressing thousands of files
into one archive at high speed and with a high compression ratio. Archives can be split
across more than one volume on more than one drive. The error-recovery feature enables
repair of archives damaged by corrupt disk media, which is not uncommon on floppy disks.
Individual volumes of multiple volume archives can be repaired. IMP can also unzip files
from ZIP archives created by PKZip, WinZip or other ZIP programs.
IMP is shareware. You may use it free of charge for a period of 21 days, after which you
should register your copy. Registration is inexpensive and
also covers WinImp, the graphical interface version of
Algorithm 1 is based on the LZ77 algorithm invented by J. Ziv and A. Lempel. Algorithm 2
is based on the Burrows-Wheeler Transform compresssion method developed by Mike Burrows
and David Wheeler.