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.
an ain ana ane ani any awn anew anna anoa awny annoy
an koan yean wan tan dan ran pean paean naan mean man loan lean lauan quean guan ban gan can jean van fan bean moan nan pan pian roan dean hwan wean yuan