Here's a list of tools and utilities that are part of the Windows Installer SDK. Hopefully this short reference will help you find the right tool for the right job.
Allows you to open a Windows Installer database as a database and examine or make changes to it, for example with Notepad.
Informs custom.doc to update the files around it.
Updates the file table sizes and version from source file tree. This is much like MSIFiler.exe.
Generates or applies a transform file and can be used to view the transform file. Compares two databases (such as ms.db and custom.db) and generates the transform file.
Allows you to get Windows Installer back to a clean state. This support tool helps Windows Installer maintain the configuration data about all applications.
WiDiffDB.vbs Lists the differences between two databases (CSCRIPT only).
Lists features and their composition in an installation software database.
Generates a transform from two databases, or compares them.
Lists products, product properties, features, and components installed on a computer.
Manages installation software Group Policy settings (alternative to set policy).
Applies a transform to an .msi database.