ZSQ

ZSQ might refer to:
 * ZSQ (LZW compression)
 * SQ2 (?) - A document by Paul Homchick seems to say that ZSQ is alternate name for SQ2. We haven't been able to confirm or deny this.
 * A file named "zsq.exe" might just be a copy of the regular SQ (Squeeze) software. E.g.:,.