Google Suggest

Google Suggest is a pretty cool tool which is completely free – As you type into the search box, Google Suggest guesses what you’re typing and offers suggestions in real time.

For example, if you type “bass,” Google Suggest might offer a list of refinements that include “bass fishing” or “bass guitar.” Similarly, if you type in only part of a word, like “prog,” Google Suggest might offer you refinements like “programming,” “programming languages,” “progesterone,” or “progressive.”

You can choose one by scrolling up or down the list with the arrow keys or mouse.