Anki is a program which makes remembering things easy. Because it is a lot more efficient than traditional study methods, you can either greatly decrease your time spent studying, or greatly increase the amount you learn.
RemNote is the note-taking tool that gives you memory superpowers. It automatically generates flashcards from your notes and figures out the optimal time to practice each flashcard so you don't forget what you've learned.
Memcards is a spaced repetition flashcard app for studying that solves the problems of "avalanche" and makes it faster to study decks by arranging them in grids.
On the web, there are tree-structure note-taking tools, and some people love them because these tools are really good at organizing information. There are also SR (Spaced Repetition) tools, and some people love them because these tools help them remember information with minimal...
Kanji Book is a spaced repetition tool to study and review up to 6000 kanji with the help of interactive mnemonics. Your knowledge will be tested using multiple choice questions as well as entering translations in Japanese.