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.
howlet howled holt holed hollaed holloed hilt halt hold hollooed holloaed helot haled healed hulled heiled hallot hilled helled hauled heeled hailed halite halide haloed hulloed holyday hilloed holiday helloed halloed halloaed hallooed hilloaed hulloaed hullooed
owlet howlet let wawled willet sleet toilet pullet rillet pallet piolet leet fowled bolete collet filet yawled bullet fillet fleet bluet bowled culet gallet gleet quillet mewled muleta callet chalet cleat violet gullet cowled boleti bleat billet mullet jowled bawled ballet valet howled blet mallet cullet galleta millet palet pellet pleat relet sallet delete wallet welt wilt shawled yowled
howl haole hole holey holla hollo holloa holloo hollow holly holy hoolie hooly hoyle dhole