For a Piktochart Free account:
-- You can choose from approximately 10 templates
-- Your output will display the Piktochart logo
-- You can upload up to 40 mb of personal images
-- Your downloads will be standard resolution JPEG and PNG formats
-- If you Publish your work it will be available for public viewing
-- For information about educational pricing, go to https://piktochart.com/pricing/education/
An online generator for diagrams, flowcharts, schematics, organizational charts, etc., which can be used collaboratively. The free version has limitations.
A freely available, interactive timeline creation tool. Timeline JS requires the use of Google Sheets.