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.
reendow rend rondo reined reigned rind rynd rent rand ranid rindy round randy rente rained rennet ruined runout rainout reunite rondeau
endow reendow indow kendo menudo window windowy end
green greenie greeny preen treen