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.
sins sinhs sines sains sinus scions seines sinews suns sans sons zins sinuous siennas zines zeins cines sunns snaws sensa sones sonsy sense sanes cions since snows scenas hysons sennas sansei sanies scenes sunnas sensei saunas sanious sawneys science sonnies sunnahs zinnias cense zincy zoons
ains joins rains peins lins mains kins kains quins coins gains cains tins dins whins zeins chains sains shins rins jins bins veins ruins reins pins loins pains fins foins quoins gins hins ins wains tains wins zins chins sins yins