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.
bedell bedel betel beadle beetle beadily badly botel boatel bodily bawdily
bedell dell del widely stella rudely patella nudely cadelle ideal telly tell dull duello duelli duel dill diel delly idyll deli model dele outtell deil retell deal seidel bedel wedel doll yodel
bedew bed bade bead beady bedu beedi beet bide bode abed