For OSX 10.6.8 and up, and Windows XP and up.
 
 

SdrDx links:


  Screen shot: https://www.flickr.com/photos/fyngyrz/13613345275/
    Downloads: http://fyngyrz.com/?p=915
Documentation: http://fyngyrz.com/sdrdxdoc/sitemap.html
      Changes: http://fyngyrz.com/sdrdxdoc/changes212.html