Visual Patch 

Provides software developers with a comprehensive solution for creating secure full-history software update patches. Visually indicates the differences among product releases and automatically builds only those changes into a single-file patch.
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PatchWise Free 

A free 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.
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