Free Mac program: https://prezi.com/desktop/
Free Windows program: https://prezi.com/desktop/
Website: https://prezi.com/
Google Chrome app: https://chrome.google.com/webstore/detail/prezi/acoonfmhnndodekhecidldfdjgooefpg
Website: http://getkahoot.com/
Free iPhone app: https://itunes.apple.com/app/apple-store/id1131203560?mt=8&at=10l6SU
Free iPad app: https://itunes.apple.com/app/apple-store/id1131203560?mt=8&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=no.mobitroll.kahoot.android
Free Android Tablet app: https://play.google.com/store/apps/details?id=no.mobitroll.kahoot.android
Free Android Phone app: https://play.google.com/store/apps/details?id=com.zondle.mobile
Free iPad app: https://itunes.apple.com/us/app/zondle/id497342127?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/zondle/id497342127?mt=8&uo=4&at=10l6SU
Website: http://www.zondle.com/
Edmodo app: http://www.edmodo.com/publisher/zondle
Website: http://www.sumdog.com/
Website: http://skoolbo.com/