It is possible to run the applications from this
site on Mac and Linux machines.
Here's the suggested method.

 
1. Install free VirtualBox from Sun

2. Install Windows OS in the virtual box,
    with all service packs and updates

3. Install .NET 3.5 platform in Windows

4. Install the software from this website

DONE

There will be no visible performance difference from native
Windows install.


Q. Why use .NET and not Python or Java for instant
cross-platform portability ?

A. Python is very, very slow. It is not unusual to see 20-100-fold
perfomance loss compared to C++ / .NET. 

Java could be a good approach as its speed is getting
quite good. Unfortunately, porting
these applications to Java will reduce perfomance
of many functions by many-fold (>7-fold for simple
arithmetics with doubles). Therefore, it is best
to use the virtualization means suggetsed above.

As it is not allowed to publish benchmarks by .NET license
agreement, here are two executables that you could use to
assess basic .NET and Java performance on your machine.
 
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