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.
sans sains sanes sanies sansei saunas suns sins sons sanious sawneys snows sinhs sones sonsy sinus snaws sunns sense sines zanies seance sunnas sennas scenas sonsie seines sinews scions hysons sensei scenes sinuous siennas sonnies sunnahs zins cense cions sensa since zanza zeins zoons
bans koans yeans wans deans sans pians pans nans fans vans jeans cans guans beans lauans queans leans loans mans means moans naans paeans peans roans dans tans weans yuans