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.
q with no u
32 words found.

qi               qophs            qabalas          
qat              tranq            qindars          
qis              faqirs           qintars          
qadi             qabala           qwertys          
qaid             qanats           sheqels          
qats             qindar           mbaqanga         
qoph             qintar           qabalahs         
faqir            qwerty           qindarka         
qadis            sheqel           sheqalim         
qaids            tranqs           mbaqangas        
qanat            qabalah

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!