YARPS looks promising, but updates seem far and few between, looking at their facebook page. So if and when it releases... unknown to me.
*Edit*
BTW I'm looking for other alternatives too. Sadly so, as I love RW. But I will continue to use it until something with at least the same features comes around. And preferably an RW-import possibility ;-)
And who knows, maybe HLO will be a huge success and carry RW one day. I only used it briefly for the PF2 playtest, but it worked nicely.