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.
termly trimly trembly dermal drumly tremble tremolo turmoil dreamily tramel tramell trammel trommel
firmly termly warmly primly drumly dermal rumbly brambly formal formol trembly roomily creamily formyl grimily grimly grumbly normal primely cormel trimly crumbly dreamily wormil
term derm derma tearoom teraohm tram trim trumeau tryma iterum