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.
sundaes sundews sondes sounds senates sends sneds sinuates sands suints zounds snoods scends synods sonatas sonnets sennets sanities sienites zenaidas snits snots saints santos scents snoots snouts cenotes sennits
sundaes bandas phonates annates anodes nudes neonates pandies panadas randies maenades monades landaus senates bendays candies dandies indies donates vendace dynodes vendues undies nides shandies nodes nates nadas ruinates phenates enates bendees endues mondes pandas noondays penates lindies maundies condoes sondes bandies indues sundews hondas denudes vandas duendes vendees tannates hyphenates undoes fondues shindies