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.
shows shoes shews shaws chows shoos chowse shes sheas chaws shays chews shahs chose shies choose choosy chouse choosey choughs shaughs sheughs
chows hows shows hos hews bowwows bowse bows miaows knows dowse whews pows whoso sows chews owse hoes shaws shoes vows hose chaos haws mows jows powwows nows hoys cows lows lowse meows shews shoos chowse rows dows tows whose wows chaws chose yows
showy show chow shaw shew shoe shoo chowchow