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.
donors downers tenors toners diners dinars denars tenours tonners dinners deniers denarius deaneries tuners dineros tanners teeners tenners tenures tinners
honors tenors donors senors pawnors manors minors gunners lunars joiners punners honours loners liners caners panners banners keeners conners knurs diners juniors senoras sooners runners canoers denars tenners shunners wonners wieners weiners tuners toners tenours pinners noirs tanners seniors leaners owners knars snores ruiners mooners inners cunners moaners biners sinners boners canners zoners genros henrys seiners fanners noris manners penners lanners coiners ginners honers gainers veiners gnars sonars vanners downers meaners miners senores goners pawners dinars fawners loaners teeners dinners genres tinners tonners weaners whiners winners shiners yawners