This option defines which tools are used by Advanced Installer to digitally sign the setup packages.
Advanced Installer tries to find SignTool.exe from the Windows SDK (this must be installed on your computer). If you don't have the SDK installed or you disable the option to use an external tool, Advanced Installer has its own alternative DigiSign tool that can be used to digitally sign the packages it creates.
MsiMsp.exe is a tool used by Advanced Installer to build Windows Installer Patches.
These files can be downloaded for free from the Microsoft Web Site and they are part of Windows SDK.
The JDK (Java Development Kit) is required by Advanced Installer to verify the signature of the JAR files that are packed using Pack200.
The Mac OS Launcher is the Java Application Launcher used in your Mac OS build by the java products that are using Oracle VM. If you specify a custom launcher you should define its custom settings using the MacOS Java Launcher Properties page.
RegAsm.exe is a tool used by Advanced Installer to register a .NET Assembly for COM Interoperability. This tool is part of the .NET Framework.
When necessary, Advanced Installer will attempt to find the executables itself. In case of failure, you can specify the exact locations here.
VMware ThinApp install location.