If you’re not excited about Brighter shores then I really don’t know, for some reason no one has ever tried to make the same type of game (aside from Genfanad and Titanreach, both of which have shut down quickly after release)

You could check out Project: Gorgon, it’s something of a mix between Runescape’s multitude of slow-to-level, interconnected skills on one character and a more typical MMO with distinct classes, buildcrafting and group content. It has a free demo on Steam. All of that said it’s only vaguely similar, and I wouldn’t mention it if there was anything closer to OSRS.