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.
teddy toddy ted didy tidy toed teed tied tody today deedy teiid wyted daddy doody toady duddy dowdy tet dud tod tad dad did died tote tate teat dote dead dodo tide dado dite duty dada dido duad doty deed date toad
eddy neddy teddy middy fuddy reedy ready paddy needy midday cuddy giddy caddy heady didy leady waddy widdy kiddy faddy seedy soddy redd toddy daddy eddo duddy deedy ruddy readd weedy buddy noddy baddy muddy beady biddy shoddy
teddy ted eddo eddy keddah neddy redd teed tied toddy toed