Orion for old school, I don't know about RS3 though. I would be careful which client you use on RS3 so you don't get a false positive for a botting ban.
If i were you i would try to find a way of fixing swiftkit so you can use it. Its great in any ways screenshots, irc, and many user friendly tools. Im sure if you look into it enough it shouldnt be hard to fix it gl.