1)   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.

 2)   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.