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.
haets hats hets hades hates heats hiatus hits huts heights hots hoots hides heads heeds heydays heydeys hideous hoodies hotties houdahs howdahs howdies hods
haets coatis nets foetus feats watts gnats jets hates tates meets fetes ghauts dates katas boats sades etas lades fades aits gets poets hiatus beets gats bets fats fetus metis cates keets shades gaits newts yetis shiatsu chats wets waits tauts doats dauts suets satis riatas ratos pets pates wheats vatus betas tets deets sets reatas patsy nates meats eats leets hades mates heats matts quiets jatos jetes gates quietus cats moats fiats fatso bats goats beats getas rates jades ates fates lats bahts bates coats kats datos vats fets metes tats hats cades naiades weets fetas ghats netts qats sates sheets vets mauts hets mats beauts lets baits meatus neats peats rets setts diets wades batts whets oats pats pietas rats cetes seats zetas dawts duets teats wats whats cheats shoats yetts
haet hat het hade haed hate haut haute heat khat khet