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.
connotes contes condoes coonties counties contessa countess counts contos condos contuse conatus conoids canities keynotes cunts cants kentes cantus candies conduce gannets gunites quintes quinnats gahnites kainites canids cantos gonads qanats quants quints
notes denotes connotes cenotes keynotes reunites pontes snots snouts mannites kentes pintoes sienites coonties nowts nodes snoots gentes gahnites nites quintes gunites antes shanties chanties unties undoes dynodes dunites senates knots banties bounties enates finites hyphenates counties rainouts minutes kainites montes pinites runouts phonates giantess contes annates condoes lenites knouts nates phenates countess mantes dainties aunties panties ruinates shanteys chanteys unites tannates dunnites donates rentes mentees punties pointes pinots penates neonates anodes yentes
connote cannot condo connate conned conoid conto