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.
billets ballets bullets blets bluets bleats boletus ballots boletes belts blats bolts ballutes blots bailouts ballades bields bleeds blades bloats blites builds ballads balatas blights bolides baldies beladies bulldoze bloodies balds blighties blitz bolds bloods belauds
ballets willets gullets mullets billets quillets fillets gallets pallets mallets pellets sallets rillets pullets millets collets wallets cullets bullets callets lets maillots galletas boletes piolets relets allots bluets violets culets filets fleets blets chalets reallots valets cleats boletus sleets howlets tallits owlets pleats ballots lilts leets deletes bleats palets muletas toilets gleets shallots
billed billet bailed balled ballet belled boiled bolled bulled bullet