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.
soviet soffit softie suavity savvied sift soft civet saved sight softa softy safety savate sieved sighed sought soughed
soviet vet chivvied cheviot duvet divide suavity civet ivied savvied rivet vide vied vita evite revet veto cavity covet qiviut levied levity naivete naivety caveat davit divvied chevied chivied shiviti