Browser Based
Anagrams, Hangman, Mad Libs, 6-Letter-Word Game, BigOpolis Daily Fill-It-In, Bill's Free Word Puzzles, BookSense.com, Brain Games Web Guide - Word Puzzles, Conundrum, Dictionary.com: Fun and Games, Double Trouble, East of the Web Word Games, Etymologic
Scrabble
Scrabble Complete, DzWords, GameSpot Review (PC), GameSpot Review (PlayStation), Ortograf, Scrabbit, The Erudite, WordWars, WorldWide Scrabble
Shareware
Alphen, BanderSnatch, CompuCrissCross, Crypto, Grammar Quest, Hangman The Wild West, Lingo, Logos for Windows, Magic Words, Magic Words Genius