Scool Scrabble Tool
Scool is a tool for finding valid letter combinations for Scrabble. It currently uses the TWL06 wordlist. We'll add other wordlists in the future to complement TWL, such as SOWPODS.
You would benefit by memorizing these:

 

Construct your own queries:

Like:

Use the following placeholders for the like query: % matches any number of characters; _ matches exactly one character, !negates; @ intersects (AND's) the results. The like query is a fast and flexible way to find words matching a pattern.

 

Anagram:

Sub-anagrams are coming... stay tuned!

 

Where:

The where query is more advanced. It lets you define the SQL WHERE clause manually. For example, here's a query that finds all 7-letter words with 'able' somewhere inside them.
Add h to 2-letter words
46 words found.

aah              hem              how              
ash              hen              hoy              
bah              her              huh              
edh              hes              hum              
eth              het              hun              
feh              hex              hup              
had              hid              hut              
hae              hin              nah              
hag              his              noh              
hah              hit              pah              
ham              hmm              peh              
has              hod              shh              
hat              hoe              yah              
haw              hon              yeh              
hay              hop              
heh              hos

Scool is intended to make you better at Scrabble, by giving you an interactive way to learn new valid letter combinations. It is about learning, not cheating. Perhaps it would make a good handicapper: you play without it and your 12-year-old plays with it, for example.

More tools to come. Suggestions to p@ulmcnett.com. Thanks to Rebecca Slivka over at the Seattle Scrabble Club for some great ideas!