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.
polity polite poult plait platy ploidy piolet plotty pelite pollute plat plot pelt palliate pleat plaid plate palet plied poled pilot polled pullet pleiad pelota pooled plutei palate pellet pallid pallet paleate palette pileate plateau playday pullout palladia pallette
quality polity reality nullity duality jollity lit alit oolite iolite lite mullite galiot jolty faulty halite polite silty blite litu elite lilt illite fealty malty laity plait shelty guilty tillite flit melty pelite galliot kilty vaulty lealty milty phyllite relit slit daylit tallit platy fluty velleity realty salty slaty slitty zloty flite zeolite hyalite
polio pol pili plie poilu pole poll pollee polo poly pool puli apollo spoil