Further with this specific example, "ReactiveX" doesn't even call itself Rx, at least judging by the website. Closest to "Rx" from "ReactiveX" is the different

Further with this specific example, "ReactiveX" doesn't even call itself Rx, at least judging by the website. Closest to "Rx" from "ReactiveX" is the different implementations, but they are called RxY where Y seems to be the language. So "RxJS", "RxNet", "RxClojure" and so on. So the name collision doesn't even apply with the mentioned project!