Create or update MSI based installers for files, registry etc using an XML like script.
Can use in automated builds (NMAKE, ANT, NANT builds etc). A HTML report can be created (with a "file verify" button). For both beginners and advanced users. Common processes can be defined once and reused in multiple projects (templates). Has extensive documentation and a large user group. A MSI compare or disassemble tool is available which generates MAKEMSI output, this is commonly used by people wishing to automate tasks they currently use ORCA for.