Free Multimedia Spaced Repitition Software for Desktop & Mobile with Multimedia
Anki is an amazing tool for language learners of all levels. It is Free Software based on the enhanced memorization concept behind spaced repitition.
Spaced repition allows learners to acquire and memorize new material faster and more efficiently by spacing the material out in such a way that unfamililar material appears more often to reinforce learning and familiar material is reviewed less frequently. It seems like a simple concept because it is!
From AnkiSRS.net
Anki is a program which makes remembering things easy. Because it's a lot more efficient than traditional study methods, you can either greatly decrease your time spent studying, or greatly increase the amount you learn.
Anyone who needs to remember things in their daily life can benefit from Anki. Since it is content-agnostic and supports images, audio, videos and scientific markup (via LaTeX), the possibilities are endless.
Wikipedia on Spaced Repitition
Spaced repetition is a learning technique that incorporates increasing intervals of time between subsequent review of previously learned material in order to exploit the psychological spacing effect. Alternative names include spaced rehearsal, expanding rehearsal, graduated intervals, repetition spacing, repetition scheduling, spaced retrieval and expanded retrieval.