PatchWise Free is an easy-to-use patch generator that helps to create
patch packages for software and file updating. These packages are small
size self-extracting executable update programs in famous installer
style and can be distributed over the Internet.
Key Features
Easy-to-use interface including a Wizard mode
Powerful patch engine helping generate small size data
Integrates compression technology
Cutomizable add-on tools
Alterable visual options of the update program
Unicode multilingual support powered by LocWise
http://www.patchwise.com/products/pwf3info.php