MsiDiff 08.2 can be downloaded from our software library for free. Commonly, this program's installer has the following filenames: MsiDiff.exe and MSIPackageDiff.exe etc. MsiDiff is included in Development Tools. The size of the latest downloadable installer is 203 KB. Our antivirus scan shows that this download is safe. The most popular versions among the software users are 08.0, 8.0 and 7.0. This free tool was originally developed by Dennis Bareis.
From the developer:
MSIDIFF is freeware to compare or disassemble Windows Installer databases (a "MSI to TEXT" utility). The output can also be understood by my MAKEMSI tool (it is an easy way to produce MAKEMSI scripts).
While MSIDIFF is a command line based tool, the installer creates shell extensions so that the decompile operations can also be invoked by right clicking on a file in Explorer.
You may want to check out more software, such as FlexSetup, which might be related to MsiDiff.