Why should you rewrite good software? D can call C libraries. With DPP you can even use C macros in D code. D has some interoperability with C++ so now you have

Why should you rewrite good software? D can call C libraries. With DPP you can even use C macros in D code. D has some interoperability with C++ so now you have access to some C++ libs. But wait there is more. D can interop with python and R. And there was a person that talked about C# interop.