1)   PatchFactory 3.3
Full-featured patching system for bandwidth-efficient and reliable software updating. Create compact and secure multilingual full-history software patches and updates with customizable interface using innovative byte-level patching engine.

 2)   Visual Patch 1.0.0.3
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.

 3)   FlashUpdate 1.3.5
Powerful and easy-to-use software update solution. Create, manage, distribute your software updates easily! Features a WYSIWYG design editor, an advanced binary patching engine, support for automatic updates, one-click deployment to the Internet.