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.
sundial sandal sendal soundly synodal snidely snootily snottily scintilla sinuately scintillae cental santol centile saintly
sundial nodal dandily gonadial anodal vandal handily genital conidial gonadal nidal gonidial lanital mandala monadal poundal sandal sendal synodal windily