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.
coatees goatees cotes cates coats coatis cots cats catties cooties codas cades coeds gates cutes coots codes goats cuteys cottas quotes cuties coitus cutesy caddies cutesie cutties gateaus codeias gats kats qats cads cods cuts gaieties cutis gaits keets kotos gouts caids goads kites cadis kytes katas quoits kotows caddis quotas goddess goodies kiddoes kitties kowtows caducei cuddies caddice gaudies
coatees goatees tees ates bootees tates aedes suttees fates sautes hates rates cates pates bates gates lattes puttees mates sates mateys settees mattes dates nates tutees
coatee cate coat cote coati coteau couteau goatee coact cat cot