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.
doums doumas doms dumas dumbs dooms domes duomos dumbos dams toms dims dummies dimes demes tombs tomes deems demos dames demies demise daimios timeous tomboys tommies tumesce tummies tams
doums oms gnomes momus biomes comes ohms mousy koumis kumys gummous simious soms mums dooms bombs geums nomos nomas numbs pumas meous neums momes poems chums whomso pomos tomes timeous moues dumbs mumus hums rums roms comas awmous coombs domes sums mouse looms rimous nimious booms poms neumes moms ramous zooms gums nomes lums loams fumes heaumes pneumas koumys lumas humus mumms combs gaums bums caeomas famous loumas homes somas cymous pomes comous homos roams doms sumos rooms foams noms dumas duomos miaous tombs toms doumas wombs chymous
doum douma dom dome doom doomy duma dumb dumbo dummy duomi duomo