LhaLib is a Ruby extension library that unpack LHarched file.

The C sources were originally written by Y.Tagawa, M.Oki, N.Watazaki, T.Okamoto and other people, and original Lha was written by Y.Yoshizaki in early Japanese Personal Computer days.
This library is a separate production from original LHa, and released under LGPL (the origianl LHa is distributed under the proprietary license). So the product's responsibility is dedicated by arton.