I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
lust lusty last lest list lost least lysate loused lucite listee lawsuit leucite lased licit lucid lysed
bust joust just gust lust must oust roust rust dust