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.
scottie scot scatt scoot scout scute scatty sickout scat sect scut scudi scudo skate skite scuta skied sacked sicked soaked socked socket sogged sucked sukkot zygote cicadae squatty
scottie cattie cootie cottae hogtie cocotte