Here is a (pre-)release of my library. (Under a BSD/MIT-style license). It
allows Ruby to call DotNet libraries and DotNet to call Ruby libraries.
http://www.sdkacm.com/tim/rubydotnetproxy-0.1.zip
md5sum: 824940d6c08a744c32b658a707e05007
This file includes (Windows) binaries plus source code and some
documentation.