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.
bullous bulls blousy blouse boulles bilious billows bellows bullies bells blows balls bolus bills bolos buhls bolls belows boules belles blowsy ballsy ballies billies bullace bellies bels bals biles boils bails blahs bawls bowls boles bless blues boughless baals bales blase balsa bolas blaws balas bliss blueys belies bluesy boylas blowzy bialis belays bialys bylaws bailees baileys bailies bialies bowless
bullous callous villous gallous willows pileous delouse malleus pilous gallows mellows louis lilos halloas fillos callose hallows bellows alloys sallows shallows hellos allows lousy follows louse halloos hilloes holloas holloos hollows hulloes hullos jealousy callus tallows helloes billows zealous mallows duellos gallus cellos holloes niellos hilloas lulus hollos bilious folious phallus villose blousy chylous pillows wallows felloes phyllos halloes villus hillos blouse hulloas hulloos jealous jellos hallos fallows fellows yellows
bull bellow billow billowy boulle bulla bullae bully