ImBatch - ImBatch is a batch image processor with a nice graphical user interface.
Bandizip - Bandizip : All-In-One Free Zip Archiver. Bandizip is a lightweight, fast and free All-In-One Zip Archiver.
DVDVideoSoft Image Convert and Resize - Free Image Convert and Resize is a compact yet powerful program for batch mode image processing.
The Unarchiver - Get the top application for archives on Mac. It's a RAR extractor, it allows you to unzip files, and works with dozens of other formats.
Ralpha Image Resizer - High-speed image batch conversion tool
File Roller - File Roller is an archive manager for the GNOME desktop environment.