Which languages are binary compatible, e.g. conform to the same ABI? For example C and D are binary compatible. Compiled C and D binaries can seamlessly interoperate with each other. Do you know other languages designed to be binary compatible? JVM based languages?
Is it possible for languages that are not binary compatible to still interoperate with each other? For example, there is a set of CLI languages like C#, F#, VB.Net, etc.