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.
causes causeys cases cusses cuisses gausses casease caseose casas gases casus coses cosies coseys guises cussos gasses cassis gauzes gussies quasses guesses cassias caseous gazes cozes cozies cozzes gooses kisses kussos gaseous koussos quizzes quassias
bouses puses chouses pauses causes louses chiauses ruses houses douses fuses souses muses touses rouses uses nouses reuses mouses buses lassies nauseas fusees bossies asses physes lyses guesses newsies reissues misuse cosies coses hoseys fosses coseys vases quasses gussies mosses disses diseuse kisses gessoes posses pases cuisses lassoes lusus messes lessees lasses gases vises nesses cesses busses luces hoises beses dieses oases sews ceases rases tawses dassies tissues issues sassies dosshouse tusses tasses wusses chaises peises chases chausses doses chesses dowses chooses moseys resews yeses sisses wises poses daises eases gneisses bises rises josses roses busies fasces misses poussies noises cissies mousses eses seises hawses lases pussies liaises leases bosses masses loesses sasses sauces hisses hussies fuzes puces mises assess jesses nooses tosses hissies seas musses poises rooses leses losses feases missies tussehs fusses passes souse guises fesses mioses phases sees gausses cases sues loses bowses baases noses cusses peases gnoses basses isseis masseuse oses seis raises biases resees paseos hoses niseis gasses gooses poesies posies causeys esses easies pisses biasses fauces gauzes looses susses meioses pusses duces kneesies daisies wrasses possess teases sissies deuces dosses reassess wussies wisses tassies chaoses chasses cheeses sises suss disuse choses bases chowses yesses
cause causey casa case cassia caws cays cues cuisse cuss cusso gauss auks ecus caucus ocas