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.
rotos rots riotous ratos roots rotis roods rotes rotas riots routs routes rottes rodeos rods ruts rets rats roadeos rates rodes roads rites redos writs radios reatas raitas riatas redoes reties writes retuse roadies rowdies rads reds rids ritz
photos rotos lotos kotos botts coots bouts foods lottos pots outs hots hoods motts toys pottos mottoes toots jatos goods touts louts roots dots ketose moods datos ratos knouts routs rotes botas shotts shotes wots totes tods doodoos dittos stoss setous autos boots poets oots bots jots ghettoes dodos sots riots buteos foots toes kowtows quotas loots cots vetoes shoats motes tows oats pouts rots footsy lotus stows toss gouts dotes ottos boats tots phots coats mots toits knots ghettos jotas mottos soots votes biotas taos doats cotes hoots iotas lotas shots riotous kotows chotts notes quoits quotes moots koodoos moats lots nowts voodoos hoodoos poods roods shoots patois rotas rotis potsy goats setose stoas dattos doits tattoos tootsy woods shouts
roto rot protei grotty grot rato riot rood root rooty rota roti rote rotte rout route wrote brood broody grotto protea trot