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.
trimmed trammed termed drammed drummed dramedy dreamed termite dermoid dramady trymata
rimmed brimmed primmed trimmed rammed rimed berimed firmed crammed grimed primed drammed drummed trammed chirmed