Free Android Phone app: https://play.google.com/store/apps/details?id=com.socrative.student
Free iPad app: https://itunes.apple.com/app/student-clicker-socrative/id477618130?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/app/student-clicker-socrative/id477618130?mt=8&uo=4&at=10l6SU
Website: http://www.socrative.com/
Edmodo app: http://www.edmodo.com/publisher/socrative
Google Chrome app: https://chrome.google.com/webstore/detail/socrative-student/nblhpecglllndfihipmpdoikimcmgkha
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
Website: http://gosoapbox.com/
Website: http://www.infuselearning.com/
Free Mac program: http://www.polleverywhere.com/macpresenter
Website: http://www.polleverywhere.com/
Website: http://exitticket.org/
Website: http://letsgeddit.com/
Free iPad app: https://itunes.apple.com/us/app/math-champ-host/id516219390?mt=8&uo=4&at=10l6SU
Website: http://theanswerpad.com/
Free iPad app: https://itunes.apple.com/us/app/answer-pad/id978897926?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/answer-pad/id978897926?mt=8&uo=4&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=com.theanswerpad.student
Free Android Tablet app: https://play.google.com/store/apps/details?id=com.theanswerpad.student
Website: https://plickers.com/
Free iPhone app: https://itunes.apple.com/us/app/plickers/id701184049?mt=8&uo=4&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=com.plickers.client.android
Website: http://www.naiku.net/quick-question/
Edmodo app: http://www.edmodo.com/publisher/naiku
Website: https://www.tophatmonocle.com/
Website: http://www.questionpress.com/
Free iPad app: https://itunes.apple.com/us/app/pingpong-smart-clickers-to/id734147693?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/pingpong-smart-clickers-to/id734147693?mt=8&uo=4&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=kr.co.waterbear.pingpong
Website: https://goformative.com/