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.
deed deedy died teed deet dead dad dud did ted dodo tide duet duad dude dada diet dado didy tied toed dido date dite dote doody tutee daddy diode deity dowdy didie teddy toddy duddy wyted
feed heed geed jeed cooeed meed kneed need peed reed seed deed teed weed ed