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.
artily aridly artal artel aortal aureately
ruttily artily grittily fruitily tartily prettily heartily dirtily tortile luridly aureately pertly retile rutile rattail tartly curtail lyrately fertile broodily rowdily brightly torridly tritely tardily shirttail irately wordily aridly greedily curtly rattly courtly ruddily horridly brutely hardily quartile retail greatly readily seriately brittly peartly portly reedily partly shortly
art airt aorta aortae arete arid arietta ariette aroid arty