Animation software?

Hello y'all!

I've been using Krita to practice making sprite animations, but does anyone have recommendations for other free/ opensource software for that?

We (@r3nrohan and me) have been practicing all week, learning to use Unity, brainstorming with the theme list and such. Tomorrow, we're taking a day off from all this game stuff! Need a good, peaceful breather to regroup before the mad dash begins. What are you folks doing tomorrow?

This'll be our first LD jam. 72 hours is gonna be intense, but, we're ready!!!!!!!!!!!!!!!