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.
caressed crossed creased cresset caroused cursed crosshead cuirassed grassed grossed cruised greased coursed creosote crosstie crest corset crazed cruset coerced groused cariosity crust curst karst crusty graced grazed
caressed dressed pressed tressed harassed trussed greased grassed cuirassed crossed cresset reseed brassed versed reseda reissued prissed creased grossed reused chorussed
caress cares cars scares cures carassow caries carrs carse coarse cores crease cress cressy crews cries creasy acres creese scars