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.
forced farced foresaid foreside forest frized frizzed forestay fireside versed freest phrased farside fairest feracity ferocity fieriest firriest frisette frizette furriest viricide virucide voracity
arced coerced forced pierced farced sourced tierced precede triced parsed cursed coursed tercet braced pursed priced horsed graced hearsed raced proceed riced nursed terraced versed traced recede truced
force farce farci farcie farcy forays fores foresaw foresee fours