I used to use Anki Flashcards but I actually found that online tutoring is a lot better now. I use Verbling which solves a lot of the issues mentioned in the OP

I used to use Anki Flashcards but I actually found that online tutoring is a lot better now. I use Verbling which solves a lot of the issues mentioned in the OP blog. The video system is all in the browser, no Skype as others have mentioned with iTalki and my teacher shares PDFs directly on the site. It also tells me what page she is on so I can be in sync, and we draw notes etc on top of the whiteboard.