R.O.M.E (RO Map Editor), it’s a tool that i developed a couple of years ago, i tried to do reverse engeenering, and find out rsw structure, based on some information posted on Yare’s forum, i started to investigate files.
My own tool for sprites, made in Visual Basic, it can load spr and output in bmp, gif, and animated gif, last version also supports act loading, but not so much accurately.
It’s no longer developed. Also known as Spr Tool+