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.
doat dot doty data daut doit dato dawt dote date datto dotty dawtie dautie dought dit tot dad tat doughty toad duit dada dado diet tote duet taut toot toit tate deet duty duad dead tout dita teat dite dodo dido doody deity tatty dowdy today toady diode ditto daddy ditty
boat coat goat moat oat doat shoat at