InstallIt!

InstallIt! is installation software for DOS, developed by Rick Pedley and Coffee Mug Software.

It has an associated compressed file format, which can be managed using the included COMPRESS.EXE and DECOMP.EXE utilities.

Discussion
It's possible that v2.00 was the only version of InstallIt. It evolved from an earlier program named Installer, but the programs don't appear to have much in common.

Identification
Compressed files have ASCII signature "" beginning 43 bytes from the end of the file. They are observed to end with ASCII "".

Sample files

 * → *.??_