Studydeck, "The Best Way to Study GRE Word Lists Online!" was initially developed as a general platform to study flashcards online, but after a short beta was pivoted to be purely focused on GRE-preparation. It was written in CakePHP, heavily using jQuery/jQuery UI for the studying interface.
studydeck.com was officially decomissioned in May 2013. This repository was made public for posterity.
Please see the github project page for static content from Studydeck.