Looking for a programm

[Apocalipsis]

Still there are four main problems when switching from Photoshop to Paint: You don't have the layers system, you don't have a brush with antialiasing, you can only rotate in specific angles (scale is not good either, but I rarely use that tool), and you can only undo the last change two times.

You can sprite without these without many changes on the outcome of your sprites (except that they'll be really sharp without antialiasing), but it's really, really tedious to do it.