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.
hares haeres harries hoars haars hairs hires heres hears hearse hoarse heroes harass hirees heresy hearsay heiress harissa herries hers hurries harrows hoers heros heirs horas horsy hours horse horahs horsey houris heroize hoorahs hoorays hurrahs hurrays
bares ares fares shares hares wares lares pares tares cares dares chares mares nares rares res ars gnarrs rees boars paris buries areas faros bries eyres fores byres bears faeries serries fires berries hires paries aeries eyries kyries hoarse quires aureus fears heiress cowries hirees heroes seres greys terries pries frees maras braes quaeres froes purees bourrees lures queries laris reis vars varies cress lorries dories sears carrs cures perries knars presa cores barres guars lores dearies press crews caress trees tress treys dries tahrs knaurs uraeus wars wears cereus wheres murres whirries tores chairs wires duress paras surreys chars chirres chores tarries shears marries shires sores shrews years drees wairs furies mires gharries derries mairs gores ires haars sauries trues grees herries maars zeroes taros hoars tarsi vires farce aures airs prees lars marse roars sarees sires veeries prese cars haeres pairs liars gnars corries pyres feuars lyres lories moires feres sirrees dears saros larees deairs bores peres arse dures curries series pars nears fairies soars mars lairs bars varus pores curies harries kauries murreys pharos hears carries vireos caries gars hurries juries wries heres roes vairs carse phoresy gheraoes fiars ears hearse hairs fries naris cries gurries murries parries preys tears kerries ceres jars meres brews oars gyres jerries heresy gaurs gears pears boreas grues parrs tyres pareus tars tarres peeress sirees mores varas rears lears rues ores quarries zaires parse seeress coarse mures peeries fairs wearies souaris worries tres trews dress durries tries cires ureas ferries diaries whereas saris wherries pareos whores dowries soirees charas brees charrs dairies cherries choreas nereis tires sherries tories shores tiaras yores
hare haar hair hairy harrow harry hear here hire hiree hoar hoary