Open source language learning only has Anki. Everything else is in an enbryonic stage.
There are so many low hanging fruits. Add-on to look up words in subtitles and add it to Anki. Luo dingo clone that’s a bit less tedious (without having to write so much of your native language). Clozemaster clone (unless someone knows how to set up Anki to do this)
I question my choice of Nvidia every day