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.
dirty dirt dorty dart diorite drat tarty droit derat derate trouty treaty deaired hydrate deaerate tart tort tret trot
dirty shirty arty variety fruity forty ferrety ferity parity borty party purty surety verity tarty airt weirdy virtu girt carroty gritty quirt lirot parroty purity rarity dirt dorty warty charity shirt hearty cherty shorty
dairy diary dire dietary dieter