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.
beset best beast besot basset beside bestow bassett bust bast beastie bused based boast boost busty biased bossed boused bowsed bussed biassed
beset reset set vesta reseat doughiest best quest suet misseat disseat lest jest seta hygeist seat gusset fiesta basset gest zest asset knesset shiest nest chest west reest testy test russety cesti pesty pest zooiest resit sett roset wriest hest gooiest cosset rest feast coset guest beast tasset wrest besot fest miseat cesta deist zesty heist vest russet siesta feist chesty misset weest hygieist resat posset pesto peseta neist bassett least cheesed east keyset cuesta geste geest doest testa yeast
bes base bees beys bise beebees obes obese