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.
cordially cordial cordelle credal gradually courtly creedal crudely greedily cradle curdle curtal curtly curtail gradual greatly grittily
radially cordially bridally gradually maritally toroidally