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.
avions avians avens affines avenues aphonias avianize affiance
avions fines vinas veins vines muffins puffins paphians ravins covins mavins caffeins savins geophones ruffians syphons buffoons dauphins biffins deveins bovines diaphones affines tiffins vinos typhoons avians phons phones savines phonos foins fons fohns ovines ravines pavins refines levins mayvins coffins siphons finis caffeines dauphines euphonious defines boffins devons bowfins divines finos typhons fins chiffons