From OpenSCADAWiki
Q: Does OpenSCADA work under QNX, FreeBSD, MS Windows, ...?
Re: OpenSCADA is developed in accordance with the principles of multiplatformity, based on the recognized world standard of POSIX and multiplatform libraries. However, due to resource constraints and the interests of the author and developers, the project is being run only on Linux. Further adaptation to other platforms is scheduled after the release of version 1.0 and at this time OpenSCADA is running on the hardware platforms x86, x86_64, ARM and the software Android platform. Support for a platform will depend on the community's interest and the availability of a separate hardware and software platform maintainer.