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.
grooms grams gorms grumes caroms gramas grimes carroms grumose grammes grumous grammas gremmies gouramis corms crams gouramies kermes kormas crimes karmas cremes kermis creams crumbs kirmess kermess cormous grimace curiums crambos crambes corymbs quorums cramboes cramoisy crummies kermesse
rooms tearooms dayrooms varooms showrooms grooms brooms vrooms barrooms bromes chromos dorms bromos proms chromas forms teraohms promos neuromas roms corms aromas proems worms caroms chromes roams gorms norms carroms