Word Games

Morpho A word game where you swap one letter at a time to get from one word to another.
Transmogrify A word game where you swap/drop/insert one letter, or anagram, to get from one word to another.
Fry Your Brain A word game where you add one letter at a time to the pool and make a word containing all letters in the pool.
Word Mastermind A word game where you try to guess the secret word.

Other Stuff

Facebook Group The OWL Memorization Facebook Group
Regex Quizzes Various types of word quiz.
Word Info A place to get info on words (inner hooks, anagrams, extensions, ...).
Scrabble Club Stats Club Stats, mainly for Cambridge ON.