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.
snows snaws sinews sans sinuous suns sins sons sanious sinhs sinus sones sense sines sunns sensa sains sanes sonsy hysons sennas saunas scenas seines sensei scions snoozy sonsie sanies scenes snooze sunnas sansei sawneys senecio siennas sonnies sunnahs
knows enows snows minnows winnows nows nos venous mannose annoys vinos genoas naos gowns news snaws quinoas manos gnaws nose monos nonnews owns renews sinews noes phonos guanos winos beanos winoes kinos nosy venose lanose nous towns heinous fanos canoes finos vinous kenos danios tannoys anoas lenos llanos linos knowns onos pianos ruinous dinos downs chinos