I am thrilled to announce that MiniScript is now open-source! The repo is at GitHub, and includes the C# core, the C++ core, and the C++ host code for the command-line version. You can also read a blog post about it here.
This is going to help MiniScript get even stronger in the years to come. I really believe that MiniScript is the best programming environment for many purposes — not for everything, of course, but great for the sort of situations where scripting languages are usually used (and some where they usually aren't).
If you are an open-source advocate and want to help MiniScript grow, please do! Start by replying to this thread and letting us know what you might want to work on. We can discuss coding standards and how pull requests will be evaluated. I look forward to working with the community to make MiniScript better and better!