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.
ribose ribs ribes rubious rubasse rubs robs rebs rebus robes rubes rubus rabies rebuys rebozo rebbes rubies rubace rabbis rabbies rubbies
ribose gibbose bos doughboys soubise subsea boys caboose boas bows poboys obese debase yobboes kobos base goboes bobs baboos abuse abos abase lowboys boubous bowse cowboys boss gibbous boos oboes niobous lobos gobos hobos bise hoboes buboes booboos bios bouse subbase syboes diabase taboos yobbos
rib ribby bribe bribee crib oribi drib tribe