A friend and I decided to build an Anki replacement a few years ago, it's now located at https://www.memorangapp.com and has a loyal following of 10s of thousands of users. Anki is a great tool and has a wide variety of content on Ankiweb, however the ecosystem doesn't allow for any collaboration or the ability to keep content up to date (aside from manually editing decks, but where for example can you suggest a correction?).

Memorang was designed from the ground up to be the next generation adaptive learning platform. In fact many hard-core Anki users have switched over to our platform and love it! The main difference is in the ease of use of both creating and consuming content. Anki has the underpinnings of supermemo, which is designed for the ideal learner. In a couple of experiments that we've done partnered with large institutions, one still underway, we have shown that most students are not "ideal learners" in that most still cram right before big exams or deadlines. The original study focused on efficacy, you can find the slides we did for an NSF sponsored presentation here http://www.slideshare.net/gjcourt/memorang-nsf-mooc-2014. The latest study is still in the works, but will involve significantly more data.

Anki is a fantastic program and many people love and use it everyday. If you have loved and used Anki as much as we have, then give Memorang a try and see what you think! (or come help us improve the future of learning https://www.memorangapp.com/jobs)

Edit: Read about our data-model here http://blog.memorangapp.com/post/108094496626/tags-more-how-...