Wikipedia
WinAce
WinAce is an archiving program for Windows with its own " ACE" compressed archive format and built-in support for other common archive formats types such as ZIP, RAR and CAB. They also offer a freeware (but not free software) command-line decompression (including listing and testing) program called Unace for Mac OS X and Linux. WinAce peaked in popularity around 2000, but since fallen in popularity to WinRAR and Windows' built-in Zip functionality.
Beginning with version 2.65, WinAce is bundled with the WhenU adware program. This bundle has been removed from the current version (2.69) and has been replaced with an opt-in sponsorship deal via TrialPay.