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.
hauls hulas hales halos hulls heals halls hails haloes hullos haoles hallos hueless halloos hols hulloes hallows halloas hulloos hallahs hulloas halloes heils helos hilus holes heels howls hills hells hillos hollos hellos hoyles holies helios hollas hollies holloas holloos hilloes hilloas hollows helloes holloes heelless
hauls sauls shauls mauls miauls wauls cauls als gulls pails bialys mulls veals lulus goals gales guls baals boules gaols also nulls awls sales culls hails pilaus galls reales jouals rails bialis halls nalas nails pulls puls fails lulls males bulls balas rules sheals dials duals dulls taels sulus talas ulus talls wales pals weals wheals shuls yawls dals teals pulis meals gules caulis rials aals calls luaus seals salsa pawls hales foals coulis balsa dahls valse balls koalas fouls pulse falls rouleaus jails pales sals ales reals bales coals halos bals ghouls palsy vials ails caules shales buhls hulls joules coalas false gals alas kails bawls fuels galas mules kales pules calos fulls vales quails mails hulas alls peals bails heals sails rales vails lalls clause malls whales phials palls tales shawls talus dales deals doulas duels souls dulse tails zeals tules wails walls wawls shoals sials yules
haul hallow ahull hulloa hullo hull hula heal haole halo halloo hail halloa hallo hallah hall hale hulloo dhal