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.
flawy flaw flay fly flew flow flea fila fley folia foley fella folly feyly fully felly filly fallow foully follow fellah flooey fellow fil flu fill foil foal fuel flue feal fool filo floe fell feel file flee foul fowl fall full fail vela
flawy law lay pillowy willowy pilaw tallowy cullay slay clay sallowy claw rawly flay bylaw flaw blowy blaw billowy belay allay play relay slaw delay waylay yellowy