Tumbrl | Youtube | FurAffinity
Because you guys asked for it!EDIT
Got this Fantastic tip from "I don't like setting the stabilizer above as it affects all the tools in SAI. so I double click the tool and set a specific stabilizer so that it affects that tool only (I use 5 because I like to do faster strokes with my arm...). I also have pressure stabilizer set for my inking tool (I have mine set to 10).
As for other programs there is a program out there called LazyNezumi people.happycoders.org/kamih/lazynezumi [Please note that at the point of posting the website isn't working, but I confirmed the website with google cache] which can simulate similar stabilizer actions for other programs such as photoshop. I've tried it out before and you have to tweak it till you get it to your liking.
The stabilizer is pretty much like slowing down and "smoothing" your strokes."