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.
scold scowled scald scaled sculled scalade suckled seclude skoaled sickled sicklied skald cycled cycloid scalado skilled skulled squalid squalled squealed
acold cold scold clod coled colt cooled could clad gold yclad cuckold macled reclad cycled scald gaoled
scale scall scaly scowl scull socle