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.
comtes comates comities commutes comets combats comedos commits committees comatose commodes comedies coembodies gametes gomutis gummites commodious gamuts gambits gambades gumboots quomodos
comtes moieties committees gamuts gemotes comates humates limits lameds maumets fumets vomits emits reemits omits remits emotes mats roomettes mattes samites boehmites smuts metes summates mites symbiotes meds demotes comities teammates motes mateys mots emmets commits gametes gemmates gemots hamates limites gummites mammets fomites fumettes emeutes ramets nimieties remates amities mates remotes muts roommates bimbettes smites mottoes somites mottes summits mutes demits comets dimities commutes tomatoes
comte coembody comade comate combat combed comedo comedy comet comity commata commit committee commode commute