Animation is a new medium for me, so these are all very experimental.  So far I only use drawing software and generic video-editing software to produce these clips - nothing specifically designed for animation.  It's very painstaking and labor-intensive, even limited as I am to a maximum of 10 fps, which is why I was never interested in doing it before...but I tried it once and I can't get over the thrill of watching my drawings come to life!