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.
frond frowned front friend phoronid forint veranda verandah
frond brand gerund cairned phoronid front horned earned burned errand reearned surround droned mourned durned learned turned kerned churned grind yearend crooned barned rand darned grand girned corned rend rind ironed round rynd rondo around sorned drownd pernod trend marooned warned kirned yarned ground yearned