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.
danios dans dawns deans dinos denies tawnies taenias tannoys tans dens dons duns dins dinghies dynes dense denes tansy dance tains donas dines dunes downs donsy donnas donees tennis tenias tenuis donsie tauons dienes donnees dueness duennas dunness tawneys tennies tenuous toonies townies tunnies deionize
danios nos nisi noes lanose vinos ions lunies finos phonies guanos jennies bunnies conies sanies xenias genius penis pianos nose heinies enows nous fanos knows hinnies venose nosy naos lionise sanious minis tennies shinnies shannies monos winos winnows ranis whinnies unais snows townies tenuis pennis tawnies lenos minnows denies taenias quinoas zinnias meanies pions cions mannose nuncio johnnies bennis nannies kenos linos genies loonies venous anoas anise zanies lions beanos heinous manos munis ennuis minnies annoys scions gunnies boonies goonies nows ponies anis phonos canoes meinies genoas finis funnies manias peonies lanais jinnis bennies sonnies onos monies vinous pinnies pennies ionise llanos kinos tannoys dinos beanies tenias tennis ninnies toonies tunnies ruinous weenies wienies fannies winoes chinos lenis sheenies yonis