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.
grumes grimes grumous grumose grammes grams gorms crummies gremmies kermes crumbs cremes grooms crimes gramas gouramies curiums grimace grammas kermess crambes quorums kirmess cramboes kermesse gouramis crams corms creams kermis caroms kormas karmas carroms cormous corymbs crambos cramoisy
brumes grumes rhymes crambes vermes forums bromes biremes ferrums crimes rimes ramies roomies romeos gremmies gouramies ramees arames kermess quorums preemies primes serums durums yttriums rummies cremes bermes aurums crummies berimes jorums frames formes bohriums armies rums grimes berhymes bariums crumbs arums grammes curiums kermes kirmess larums premies ceriums drums traumas chromes
grum grume crumb crumby crummie crummy gorm gram grama gramma gramme gremmie gremmy grim grime grimy