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.
coleuses colessees coalesces clauses calluses closes coulisses callouses calesas classes calloses galluses cullises colossus calces colzas clozes galleasses culices glasses glosses classis calyces calices glassies glossies gallowses galliasses glasshouse glaces glazes glozes
ileuses coleuses soleuses callouses taluses jealousies delouses pluses jalousies releases plusses pleases clauses calluses phyleses galluses boluses pulses blouses blesses louses loesses leses leases phalluses dulses teleses
coleus coalesce coles colessee colies coulees coequals