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.
taipan teopan tiepin tuppenny
taipan pan pain spean pane pawn pean pian piano japan apian gipon lipin kneepan papain ripen span spawn teopan
tip tap tapa tape taupe tawpie teapoy tipi tippy atap etape stipe