Are there any .NET CLR/DLR implementations of ECMAScript?

Question

Does anyone know of real (i.. no vaporware) implementations of ECMAScript targeting the .NET CLR/DLR? Ideally something like what Rhino is

Answer 1

Still Roughly alive:

• Jurassic (Had a commit within the last year.)
• Jint (currently taking pull requests.)

Other Projects, Mostly Dead:

• IronJS: A DLR-hosted JS Implementation; IronJS Google Group. (Last commit was in 2013, last blog update in 2012.)
• Managed JScript: Died on the vine.
• MyJScript: Mentioned in the original post, for those who want more info, there's an article : Create your own language on top of the DLR.
• MonoJS: Mono had an implementation of JScript.Net, but they quit bothering.

Crazy Method:

• Rhino over IKVM (Mentioned in comments, but here's a link to more information about doing it.)