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.
apian apnea apnoea
apian pian pan pin pein opine pean pepino pawn rapine piano pain rappini lupine lipin span spean spine supine teopan chopin pane repine pina repin pion papain japan pippin lapin rapini lupin kneepan cioppino pine piny spawn spin spiny taipan tiepin chopine