Bandizip - Bandizip : All-In-One Free Zip Archiver. Bandizip is a lightweight, fast and free All-In-One Zip Archiver.
Squash 2 for Mac - The easiest way to compress and optimize images for the web
File Roller - File Roller is an archive manager for the GNOME desktop environment.
Resizing.app - Image resizing has never been so simple with free online resizing.app. Convert, optimize, resize images with ease and for absolutely free.
WinZip - The world's best file compressor in the world.
Image Resizer for Windows - Lets you resize images by right-clicking.