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.
weldor welldoer welder wielder wieldier welter wilder
weldor alder shoulder wilder welldoer welder realtor older molder melder guilder golder colder gilder gelder holder fielder aulder elder builder bowlder boulder bolder balder malodor milder moulder polder solder folder wielder shielder yielder
weld weald welladay welled welt wield wieldy wild wold swelled dwelled dwelt