Question: what is the best 2d animation free?
Answer: Synfig. First up we have Synfig, a program first released for free in 2005. This software is great because beginners can just hit the ground running. ... 
TubiTube. ﻿ ... 
Pencil2D. ﻿ ... 
Opentoonz. ﻿ ... 
PowToon. ﻿ ... 
Animaker. ﻿ ... 
Plastic Animation Paper. ﻿ ... 
Pencil. Pencil allows your drawings to come to life.