Other
Pixton: Make and Share Comics
Create your own comic with the "click-n-drag" method using characters, props, and speech bubbles at the click of a button.
Scholastic
Scholastic: Make Your Own Captain Underpants Comic
Create a Captain Underpants comic by choosing characters, dialogue, objects, and backgrounds on a series of four slides. Then view the comic and email it to a friend. Requires Adobe Flash.