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.
derby darb drab drib drub terbia ytterbia
herby derby choirboy whereby rebuy ruby forby forebay foreby verb herb hereby carboy corby kerb nearby orby prebuy cherub yerba
dear dearie deary deer deray dere derry doer