• The account on https://ankiweb.net/ can be synchronised with anki (installed on a Debian machine). The advantage of the Debian version is that you can delete the cards as needed. The online version does not support card deletion. I am currently using

% anki --version
anki 2.1.8

% dpkg -l anki | grep ^ii
ii  anki           2.1.8+dfsg-1 all          extensible flashcard learning program