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.
piggy puggy pig piggie picky peg pic pug paik peag pica pick pika pike piki poky
jiggy wiggy biggy piggy igg leggy baggy soggy quaggy raggy muggy foggy vuggy migg loggy naggy boggy faggy eggy jaggy puggy fuggy saggy buggy doggy moggy shaggy