https://bttr-software.de/forum/forum_entry.php?id=22320
DOS ain't dead - Snappy compression - script to build a compressed executable
compressed executabledosdeadsnappycompression
https://file-extensions.com/docs/ex_
EX_ file extension - Compressed Executable File
What is a .ex_ file? EX_ — Compressed Executable File. Format details, MIME type, technical specifications and the programs that open EX_ files.
ex filecompressed executableextension