I use Image Ready (Adobe) but you can use any gif animation software really.
Just animation, there all single letters tied together frame by frame. Some can be easy and some more difficult. Very Very Dificult to make them from scratch, its easier to rob someone elses work and tweak it Dont shout it the norm on the net. lol
Now Ian has an itchy left leg lol
BOOM !! Version v7.6.1.1 People who inspire me IsaacME Gizmo