Piktochart is a free, web-based graphic design tool for creating a variety of designs, including:
Piktochart is easy to use, with many pre-set templates and images provided within the tool.
Sign up for a free account at piktochart.com
Unfortunately, there is no 'collaborative' feature offered on the basic, free Piktochart account. Only you can edit your work from your original account. Instead, try:
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