There are 2 repositories under learn-languages topic.
One dictionary to rule them all -- a browser extension to help you learn languages
A curated list of amazing projects that help you learn languages.
Learn languages by reading books, highlighting and seeing translation of selected phrases
Learn other languages using artificial intelligence with python.
A tool that helps someone with their foreign language learning. Using Asp.net core MVC
Exercises used to learn languages from the website exercism.io