Although WinZip was sidelined by offering UnZip files in Windows XP as well as software such as WinRAR and its rapid growth (due to its full focus on compression rather than extras), it has also introduced new versions with an updated user interface and additional management features. WinZip is one of the oldest and most popular file compression and archiving software, first released in 1991 by Nico Mak Computing and after being purchased by Corel in 2006 under the name WinZip Computing. Winzip software, free download For Mac Os X.