App

A language learning website that uses gaming to keep learners motivated.  Easy to navigate lessons are personalized, immediate feedback is provided, "rewards" are handed out as levels are mastered.  Can be used for independent practice, or in a lab setting. The learning program is based on language-acquisition research and makes the claim:  "34 hours of Duolingo are equal to 1 university semester of language courses".

This site may also be of interest to teachers interested in acquiring another language.  There are 33 languages to choose from, including Klingon - not kidding!

https://www.duolingo.com/

Category

ELSA is an award-winning  app that that uses artificial intelligence to discern pronunciation mistakes made by English language learners. It consists of dialogues and games that allow for practicing all English phonemes, and provides immediate feedback.  (I am a native speaker of English, and I tried the activities  and was rated as 'native-speaker like' with scores ranging from 86-100%).  The designers have created an information page within their site containing resources and ideas on using ELSA in the ESL classroom .  There is a free downloadable app on Google Play and the App Store, but monthly/quarterly/annual rates provide upgrades that include a considerable number of additional features.

MemRise is a "platform that leverages memory techniques, deep understanding of neuroscience and novel approaches to second language acquisition to make learning a language dramatically easier and faster."