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.
briars briers buriers barriers borers bearers burrers burghers
briars friars barriers arrears roars rears rares couriers briers curaris curaras marriers pareiras priers drears tarriers triers uraris wooraris quarriers buriers farriers queriers furriers variers harriers hurriers carriers criers friers curriers curares ouraris parriers priors driers terriers urares warriors worriers
briar briary brier briery burier