UltimateZip is free unlike Winzip. Can unzip to new folder same name, same folder,
or anywhere else. Can look at files without permanently unzipping. Right-click options. http://www.ultimatezip.com/download.htm
Batch options also available, but I don't use them. I do
use the menu items that were added to context (right-click) menus,
If you click on a zip file you get this context menu
Extract to...
Extract to here
Extract to folder
Create Self-Extractor (.exe)
E-mail ...zip
if you right-click on a file you get this context menu
Add to Archives
Add to "filename".zip
Zip and E-mail "filename".zip