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.
scows sickos scouse sacs secs sics sacks skews socks sooks soaks souks sucks sicks sagos sokes socas segos squaws sickees sox soukous sickies sequoias sags segs skas skis suks suqs
scows cows cos cocoas decos ficoes locos guacos cogs coss mucosa coos cosy coys boocoos caws dioicous wackos chicos jucos buckos fucose gowks howks locoes decoys sickos mucous fucous raucous whackos tacos mucose macaws cocos cacaos jocose jockos geckos shackos