Solus has no fractal rendering software. I would suggest this as one of the best. The main download link is stable 4.01.
April 22, 2018:
Version 4.0 released. This supports Python 3.x
easy to use, with a polished, modern UI very fast, with high-performance multi-threaded rendering flexible, with an unlimited number of fractal functions and vast numbers of options widely used, with over 125,000 downloads to date