Hey! I suppose iSpring Free can meet your requirements. It's an authoring tool with the help of which you can create your courses and quizzes. You can read about it on the official site https://www.ispringsolutions.com/ispring-free
I have only ever user PowerPoint and Storyline. My co-workers in India swear by the iSpring plugin for PowerPoint which seems to add much of the Storyline functionality.