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.
hydrant tyrant truant drained deraigned darned droned drownd durned drowned ternate torrent trained turnout
hydrant rant warrant truant riant arrant brant errant variant jurant coranto courant courante couranto currant grant guaranty maranta tyrant warranty