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.
peracid hyperacid pierced praised persuade parricide praesidia preside precede perused presidia presidio parasite periostea prosciutto prosciutti parsed priced prised prized prosed prosit purist pursed pressed prissed proceed prosody pursued pursuit
hyperacid peracid hydracid characid raced braced graced terraced traced triacid