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.
manioc manioca manic maniac mango muonic manga mongo mungo manque mongoe miaouing
manioc phonic runic pianic hypnic manic manioca kaonic conic hygienic quinic genic ionic tunic tannic winnock sonic hyenic scenic knock hyphenic maniac snick cynic pionic panic vinic muonic nock bannock nick bionic bonnock aeonic tunica tonic hyaenic xenic yonic
mania man amnia muni main mana mane manna mano many maun mawn mean meanie meany mini moan monie amain amnio