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.
dunnite dunite dunned dunt daunt denned donate donned tunned denote dinned duende denied dinette tannate dent dint doughnut donut taunt tuned dined dawned deaned denude downed dynode tanned tinned dainty deigned tenuity tonette
mannite dunnite nite whinnied tannate sienite dunite sennit finite hinnied innate connate connote reunite gunite kainite lenite pennate pinite pinnate gahnite unite shinnied nit