Looking for a tool that doesn't require you or your students to sign-up or create an account? Check out one of these.
*Keep in mind that you may not be able to save your data if the application doesn't require an account. If you need to save information for later use, be sure to explore your options before beginning.
These resources require either you or your students to create accounts. This can give you added functionality (such as the ability to save gathered information), but it can also take longer to set up, so plan accordingly.