I use D for almost everything I do.

A lot of the cool stuff being integrated in modern C++ has been present in D for ages ('enum class', 'string_view', 'constexpr', 'auto', ...) ... D has a real module system (=it compiles fast) and an extremely powerfull template system. It's one of the rare languages allowing introspection (e.g you can statically loop over a struct members) without bringing in "dynamic" stuff (e.g add members at runtime, etc.).