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.
frisette frizette furriest firriest fieriest first frost verist frized frosty verste verset frowst forest frusta freest farside frowsty fairest frizzed veriest feracity ferocity foreside fireside forestay verst farced forced versed
rosette frisette grisette roseate frizette
frise frisee fraise fries frieze furies