MSIDIFF 

MSIDIFF is freeware to compare or disassemble Windows Installer databases (a "MSI to TEXT" utility). While it is a command line based tool, the installer creates shell extensions so that it can be invoked by right clicking on a file in Explorer.
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Stylus Studio XML Enterprise Edition 

Stylus Studio XML IDE features XML Editing, Debugging, Testing/Benchmarking & Deployment Tools for any XML technology, including XML Schema, DTD, XSL/XSLT, XPath, XQuery, XML Mapping, Web Services, SQL/XML, EDI, Legacy Data Integration and more.
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Network/Unplugged 

Mobiliti's synchronization solution Network/Unplugged provides a transparent incremental synchronization and backup (including outlook backup) for today?s remote and mobile users along with offline viewing capability and ease of deployment
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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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