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.
gahnites gunites kainites canities candies kainits gannets ganoids cants contes cantos cantus kentes canids quants qanats quintes quantize keynotes countess coonties counties connotes contessa cunts contos counts gonads quints
finites gahnites reunites kainites lenites mannites sienites dunites unites pinites gunites dunnites nites nits nates candies keynotes rentes canities snits lindies vanities giantess lenities cenotes bonitos antes kentes pontes manitus binits hyphenates bonitas enates shindies shanteys chanties unties unities undies tenuities donates knits dandies notes phonates contes randies montes connotes banties senates annates neonates minutes nides countess phenates punties bounties pintoes sennits penates quintes kainits indies maundies sanities pointes annuities panties dainties gentes manitos ruinates mantes coonties mentees bandies pandies bonitoes denotes tannates aunties tinnitus counties units chanteys shandies shanties yentes