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.
quatres quatorze quoters cuatros quieters coutures cateress quitters quittors cauteries catteries cadres gators caters gaters couters guitars gutters gaiters cutters goitres coaters catarrhs coteries cauterize gauderies kiters cooters cottars cotters gadders gaydars goiters guiders
matres quatres tres features viators sutures maters gaters feodaries goitres strews heaters tares dares votaress viatores caters feudaries buttress tires stares coutures litres cheaters mattress waitress taters notaries dietaries dataries retires satyrs natures metres stores padres diaries poetries rotaries dearies tarres votress paters matures beaters nitres mitres zedoaries retries eaters cadres boaters satires stress steres tyres treys raters seaters futures waters haters tatars trews madres tores tress votaries gators oaters cuatros titres coaters trees attires tries trues sudaries daters shoetrees
quatre cuatro equator squatter squattier