Pixton and Storyboard That. Both of those services provide good platforms for creating comic strips. Those aren't the only tools that you can use to create comic strips with your students. Here are some other browser-based tools that your students can use to create comic strips.
Make Beliefs Comix offers comic strip templates and writing prompts in up to seven languages. The templates and prompts can be completed online or you can print them out to give to your students. Make Beliefs Comix also offers a free iPad app. Make Beliefs Comix iPad app supports the creation of comics in seven languages; English, Spanish, French, German, Italian, Portuguese, and Latin. The free Make Beliefs Comix iPad app allows students to create two, three, and four panel comic strips. To create comics in the Make Beliefs Comix iPad app you simply select the number of frames you want to use then choose the characters that you want to feature in your story. After choosing your frames and characters you can type text into speech bubbles to tell your story.
Comic Master is a free tool designed for students to use to create comics in the "graphic novel style" that is popular with a lot of kids in the ten to fourteen years old age range. Comic Master provides a drag and drop interface for students to build their comics on. Students using Comic Master can select from a variety of layouts, backgrounds, characters, effects, and fonts. Students can create free accounts on Comic Master to save their works and edit them whenever they like. Comic Master gives students the option to create and print multiple page stories.
Witty Comics provides a simple platform that students can use to create two character dialogues. To use Witty Comics students just need to select the pre-drawn background scenes and the pre-drawn characters they want to feature in their comics. Writing the dialogues is the creative element that is left to the students.
Write Comics is a free, simple tool for creating comic strips. Write Comics doesn't require any registration to use. In fact, registration is not even an option. To create a comic on Write Comics just select a background from the menu, choose some characters, and add some speech bubbles. You can continue adding frames until you've completed your story. Write Comics is quite easy to use, but there is one short-coming and that is the only way you can save your work is to save it to your local hard drive.