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.
kats katas cats qats gats kits coats goats kadis kites keets cates gates kytes kotos gaits coatis kotows ketose kowtows catties coatees kitties goatees gateaus keddahs cads guts gaieties gads kids cuts cots quads cutis gutsy qaids coots goads cotes gadis gauds cutes cades gouts cadis caids kudus codas kudos qadis quits
bats hats seats peats oats gnats lats meats goats kats gats coats cats heats wheats wats cheats tats vats beats qats teats doats rats pats neats mats moats ghats boats eats fats feats fiats chats whats shoats