Dynamic Language Runtime Source Code

In my previous post I said I was unsure what license Microsoft's DLR was released under. But in this blog post from Jim Hugunin, I discovered it is released under the same license as IronPython 2.0 - the BSD-style Microsoft Permissive License. This means there is access to the source code for DLR. Currently the DLR source is shipped with source code distribution of IronPython 2.0 Alpha 1.