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.
saimin simian seaman seamen semina simony simoon semen soman summon someone symbion
saimin amine mina mine hominy amain amin mini lomein remain nomina ammine limina liman simian gamine daimon cummin diamine camion domine imino tamein jimminy mien main limen haemin vimina hemin famine ammino vimen limn numina lumina rumina lamina amino semina gamin daimen cumin diamin caiman domain imine domino jiminy wimmin
sim samba sambo same seam seamy sima