XEQ
From Just Solve the File Format Problem
XEQ is a self-modifying executable library tool for DOS, developed by Hardwood Software Associates and Colin J. Stearman. It lets you convert multiple small .COM files into a single .COM "library" file, and select the one to run using a command-line argument.
Discussion
To create an XEQ library, start with a possibly-renamed copy of the original "stub" XEQ.COM file, and add some .COM files to it by running it with the /A option.
To list the contained files, use the /L option.
To recover a contained file, use the /E option.
Identification
A possible signature is ASCII "XEQ.COM", then 0x00, at offset 5.
