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.
heresy heres haeres heroes hers heiress hearsay herries hares hears horsy hires heros hoers heirs hirees hearse heroize harries hurries hairs horas hoars hours haars houris harass horahs horsey harissa harrows hoorahs hoorays hurrahs hurrays
phoresy heresy res horsey areas caries quaeres cores hares roes vires rees lorries murres cares grues veeries queries reis gorsy wries rares furies sores byres rues bores zaires jersey braes gyres hirees faeries curries hurries fores rosy resay brosy kauries larees grees eyres cowries heroes prese lores seeress mores prees pareus sirrees hearsay drees sirees tores dories trews perries terries tyres trees preys whereas tries derries wherries whores worries cherries sarees choreas shares shires shrews daresay wares pareos series pursy prosy durries heres cereus fares tress mires nereis lyres peeries cures brews dairies cress parries dressy kersey murries dures marries tarres crews fries ferries ores aureus diaries greasy seres moires jerries eyries pries peres chores presa quires wearies tarries dares paries murreys lories caress mares kyries trues duress tories fires curies frees haeres ares fairies froes brees cressy hires carries aures herries lares buries gurries lures gharries heiress meres berries vireos mures whirries shores varies sires gores pyres bares serries cires boreas dowries surreys horsy tres chares barres harries corries dress feres creasy bries tressy aeries ires juries bourrees quarries pares wires purees press pores peeress nares zeroes tares ureas cries ceres sherries kerries greys sauries soirees dearies dries tires treys wheres chirres yores
here her hare hear heir hero herry hire hiree hoer