Peazip Portable would be a fantastic zipping program even if it wasn't portable. The fact that it is makes it a phenomenal option to choose for zipping and unzipping your files. It's especially potent if you need the same experience on multiple computers or have a do-it-all Flash drive.
This is a portable program, so it's made to live on a USB drive and work with multiple computers without needing installation. If you have an overly sensitive anti-virus program, it might flag this app as suspicious, but ours didn't make a peep when we tested the program. We got the program to zip most file collections in a matter of seconds, regardless of which format we chose from the dozen or so that were supported. That was just with Peazip Portable's standard method of compression, but the program offers five different forms of compression, from a fast version that prioritizes speed to a very powerful version that compresses your files as much as it can without much of a care for speed. From there, you can move the file wherever you like or even e-mail it to someone from within the app. The app's layout is downright impressive in terms of style.
Most of the elements of this app are wildly impressive, though. Easily put, Peazip Portable is one of the best zipping utilities you can find for Windows. It's even more impressive, since it can sit quietly on a Flash drive.