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.
fruitily fertile foretell variedly varietal virtually fardel
fruitily ruttily artily brittly heartily grittily prettily dirtily tartily tritely
fruit fruity frit ferity fritt afrit