LSZip

With LSZip you can add industry-standard PKZip and WinZip compatible (2.04g format) data compression capabilities to your own programs. Our data compression libraries allow to create and manage Zip archives in your Windows Vista/2003/XP/NT and Me/98/95 applications without having to shell out to a "DOS" session. Time critical routines are written in fast, highly-optimized assembler code and can perform at speeds up to 200% faster than other Zip libraries.