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.
louden loden laden leaden lutein lowdown laten lateen latten litten
louden den fadein dean boudin bidden deny deni dene maiden hidden redeny sadden soudan deaden duodena udon wooden shodden odeon voudon hoiden redden codein coden laden loden hodden leaden hoyden midden madden ridden sodden sudden dudeen tauten widen chidden hyoidean
loud laud glout cloudy leud load lode loid lout lude alodia aloud elodea elude flout clod cloddy cloud clout plod