Pixton is similar to Stripgenerator in that it is a web-app that helps you build comic strips, though it has far more options like changing facial expressions and adding action. While a sign-in is required, the free account allows for the most basic stuff.
Project-Based Learning: Comic strip creators can be a fun and artistic way to share learning of any sort. While literature projects are obvious, comic strips could also be used to describe any process – simply add the various steps and explain as the strip progresses (think phases of the moon, simple evolution concepts, How-To guides).
Here’s a video from Pixton’s site: