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.
sorrows serows sores soars sours soras sorus saros serosa serous sirras surras sierras sirrahs serosae cirrose surreys sirrees serries soirees souaris cirrous sers sris sirs saris ceros seers sears zoris zeros seres suras sires suers cirrus surahs series cerous sieurs sarees serais source zeroes sirees sauries seeress serious
arrows barrows furrows sorrows farrows burrows yarrows marrows morrows narrows borrows harrows rows barrios churros cirrous trows ferrous drowse vrouws frows morros grows browse crows serows frowsy burros vrows prows brows drowsy cirrose charros karroos