Redhawk is not limited to running applications on Linux platforms, per the SCA standard. An ExecutableDevice (see http://redhawksdr.github.io/Documentation/main.html, Section 6.4 'Executable Device') enables software to be copied to and run on a particular host, which does not have to be Linux-based. However, Redhawk does not provide any implementations, base class/helper libraries, development tools, etc. for other platforms, which makes this less practical.
The only exception to this is the SCA explorer, used to browse/interact with Redhawk domains (for Windows, available on SourceForge). Interacting with a running Redhawk domain from a different platform is fairly straight-forward using CORBA and the interfaces included with the Core Framework.