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.
halloos hallos halloas hulloos hallows halloes holloos halls halos hollos hellos hillos hullos haloes hollows hallahs hulloas hilloes helloes holloas hulloes holloes hilloas hells hauls helos hails hales hills hulls heals hollas helios haoles hollies hols heelless hulas holes howls heels hilus heils holies hoyles hueless
halloos holloos hulloos loos holloes halloes fillos halloas hallos helloes villous phyllos holloas hollos villose hilloas hillos jellos callous gallows mallows niellos cellos duellos wallows shallows floosy hulloas hilloes hellos loose bullous billows bellows alloys fellows fallows follows hallows felloes allows hollows hulloes hullos callose gallous lilos mellows pillows sallows tallows willows yellows
hallo halloo hallow halloa hall halo holloo hulloa hullo hollow hillo holloa hollo hilloa hello hallah hulloo