Survey Quiz Apps

[sruan2]

Compile a list of the current state-of-the-art quiz apps/ flash card systems/ APIs/ open-sourced codebases

[Zhengneng]

quizup
https://play.google.com/store/apps/details?id=com.quizup.core&hl=en
https://github.com/plain-vanilla-games?page=1

onchatbot
https://www.onchatbot.com/
https://botlist.co/collections/@kirankrishnan/quiz-chatbot

quizdom
https://chatbottle.co/bots/quizdom-for-messenger
https://chatbottle.co/bots/messenger/quiz

[Zhengneng]

quizlet
https://quizlet.com/

[Zhengneng]

cram
http://www.cram.com/

[Zhengneng]

StudyBlue
https://www.studyblue.com/

[Zhengneng]

Is there anything else I need to add?