What Damon said.
Aftershot, or rather Bibble, is all about workflow. Not the best image quality, not the easiest dam features, but good enough considering it can get things out so fast that it puts others to shame.
The main point being the human part of the workflow. The engine is also flying.
It is also the only multi OS raw converter with a concept of workflow, on all 3 major OS's. There are many more that run on all three, but none of them implements the workflow concept as Aftershot does.
I ran when they sold out to Corel