Open source rules engine with decent interface for writing rules

Question

I\'m trying to locate an open source business rules engine that has a decent interface for building the rules.

OR at least one that works well on the .Net platform and h

Answer 1

I'm going to throw one more piece of software I ran across: ncalc.

It's not exactly a "rules" engine; but it does do dynamic calculations where you can give it the expression to evaluate and all of the variables necessary. This was pretty much exactly all I needed for the app I was working on.

For a simple engine it works just fine. As far as an interface, it wasn't that complicated to build a few pages to let people type in the expressions.

For more complicated things, NxBRE is a better option; as @Kevin Dente answered above.