See Bridge.NET, where Saltarelle has gained commercial support under the Apache 2 license. <a href="http:&#x2F;&#x2F;bridge.net&#x2F;" rel="nofollow">http:&#x2F;&#x2F;bridge.net&#x2F;</a><p>Or pay for DuoCode <a href="http:&#x2F;&#x2F;duoco.de&#x2F;buy" rel="nofollow">http:&#x2F;&#x2F;duoco.de&#x2F;buy</a> or SharpKit <a href="http:&#x2F;&#x2F;sharpkit.net&#x2F;Licensing.aspx" rel="nofollow">http:&#x2F;&#x2F;sharpkit.net&#x2F;Licensing.aspx</a> (both also available under copyleft-ish licensing).