Here are some External resources that I have found useful, or that others may find useful. They are organized into headings, in order to be more navigable with screen readers.
An accessible game is one in which sound or another interface method is used to play the game. Examples include Audio games, which use sound; or MUDs, which use text.
Arbalon is a link to my friends page, with some software.
Qwitter - An accessible Twitter client.