LabVIEW has support for Windows, Mac, Sun Solaris, HP-UX, and Linux. See the product catalog page below for more details.
http://sine.ni.com/apps/we/nioc.vp?lang=US&pc=bymn&cid=1382
These applications must run on their native platform, but VI's can be ported between different platforms. For example, you cannot install LabVIEW for Windows on a Macintosh, but you can take VI's that you have developed in LabVIEW for Windows and use them on a machine with LabVIEW for Macintosh.
