Canva is a visual communications platform that allows you go create wonderful designs - everything from infographics, posters, presentations, social media posts and more. It is quite intuitive - drag-and-drop millions of images, illustrations, videos and text elements. If you sign up for an educator account here are over 60,000 educator-created templates that include flashcards,

Canva introduced an education plan that offers "pro" features for free at

Here's a good article from Richard Byrne on using Canva in the classroom:

Canva has introduced real-time collaboration options. Here's another article from Richard Byrne describing this: