jMemorize is a Java application that manages your flashcards by the famous Leitner system and makes memorizing facts not only more efficient but also more fun. (GPL)

Kanagram mixes up the letters of a word (creating an anagram), and you have to guess what the mixed up word is. (GPL)

KHangman is the classical hangman game. (GPL)

Kiten is a Japanese reference/learning tool. (GPL)

KLettres aims to help to learn the alphabet and then to read some syllables in different languages. (GPL)

KWordQuiz is a general purpose flash card program. (GPL)

A software for learning vocabulary based on Leitner cardbox principles. It is very easy to use and you do not need to be concered about the cards and their groups. (GPL)

Parley is a program to help you memorize things. (GPL)