Here are some key features of "Zipeg":

· supports wide variety of archive formats;
· allows to see what's inside BEFORE you extract;
· opens files in Preview directly from the archive;
· shows image thumbnails (EXIF) in tooltips;
· extracts items simply by dragging them;
· easy-to-use user interface;
· archives are processed in background;
· no archive size limitations;
· opens CD and DVD ".iso" image files;
· reports cumulative contents size of subfolders;
· customizable destination and source of extraction;
· automatically open archives via file types associations;
· automatic `path completion` for destination folders;
· automatic updates;