MODERATOR EDIT (Triem23) The free giveaway listed here has expired. However, through 8/14/16 one can puchase PDHowler 10 for $30 instead of $80 here: PDHowler 10 Discount
For anybody interested in alternative paint and animation software TheBest3D is handing out free copies of PD Howler 9.6 and offering a discount on the current version 10.
PD Howler is an odd duck that prides itself on not being Photoshop and it has some pretty handy features so it's definitely worth a try when it's free
Their YouTube channel is loaded with hundreds of tutorials too.