HOT POTATOES
http://hotpot.uvic.ca/
The Hot Potatoes suite includes six applications, enabling you to create interactive multiple-choice, short-answer, jumbled-sentence, crossword, matching/ordering and gap-fill exercises for the World Wide Web.
Hot Potatoes is freeware, and you may use it for any purpose or project you like. It is not open-source
There is not required age for users
ARTS EDGE
http://artsedge.kennedy-center.org/educators.aspx
ArtsEdge is the Kennedy Centre's free digital resource for teaching and learning in, through and about the arts
It includes a new families prtal, a media library, KC connetion, and a field guide for theatres
There is no required age for users
SEND STEPS AUDIENCE RESPONSE SYSTEM
https://www.sendsteps.com/en/
"Your mobile phone, tablet or computer can instantly become an audience response system and voting device. Without any expensive equipment, and by simply downloading the add-in, your organization can benefit from using Sendsteps as both an audience response system as well as a voting device."
"You can poll your audience by asking them multiple-choice questions"
This tool is easy to use and affordable
short description of how this tool could remove or reduce barriers for certain learners
This tool of for all ages and users