Handiest set-it-and-forget utility ever for the Mac. Preference pane that auto inserts text and corrects common typos—on the fly. Kate’s detailed review. New snippet adds auto URL shortening, which is good for email.

TextExpander saves you countless keystrokes with customized abbreviations for your frequently-used text strings and images.

9WR - TextExpander: Auto corrects typos, inserts text with user-defined keystroke combos.