This library provide a single header file containing world_ptr, a smart pointer that uses a pointer map to store a counter which, arrived at 0, delete the referenced pointer. Its functioning is very near std::shared_ptr but is surely a lot less safer - but at least you won't have memory leaks.
The motivation behind this was to return a raw pointer as a smart pointer without having it as a weak smart pointer or raw pointer which doesn't ensure its lifetime after behind stored somewhere else.