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.
pleats plats platys palets plaits plates pleads pellets platies piolets pleiads pullets pallets palates plots pelts palettes pleiades plateaus palletise plaids palliates pilots pelletise poults pallettes paillettes pelites pelotas pluteus payloads playdays pollutes ploidies polities plotties pullouts plods plotz palladous palletize pelletize politesse poultice
bleats cleats pleats kelts alates collets leets valets elates gelatos gallets halts gloats fleets gelates pellets violates oleates leads eluates muletas lats pallets boletus filiates fellates piolets folates howlets felts chelates slates willets wallets sallets toilets delts relets deleads dealates sleets plats gallates palates malates plateaus celts melts pullets coleads pleads cullets flats callets alts mallets maleates ballets valuates platys rillets malts bullets solates elodeas salts toluates palets deletes blets collates gelts bloats bluets plates billets gelatis mullets quillets foliates violets chalets gullets belts culets lets boletes gleets filets galletas millets fillets flatus blats floats palliates welts galateas pelts plaits balatas owlets relates ciliates slats delates dilates cholates
plead pleat puled plied pled paleate paled palet palette pealed pileate plaid palate plait plat plate plateau platy playday piled pleiad poled splat