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.
glamor glamour clamor clamour gleamer gleamier claymore clammer glummer clamber claimer calamar glimmer calamari calamary clammier gloomier calmer climber clumber glomera qualmier
clamor glamor lamer blamer flamer calamar clamour claymore glamour gleamer
glam clam clammy gleam gleamy glim glime gloam glom glum glume