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.
frazil frazzle foresail frizzily frowzily frizzle frizzly furiously versal phrasal fiercely
frazil brazil reassail resail brasil breezily foresail frizzily frowzily crazily parasail trysail uracil
forays fraise frass frays friz frizz frizzy froze furze furzy