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.
austere aster asteria astir astray
stere austere ester lister feaster mastery nastier laster coaster hoister bister gaster fester boaster bustier fustier vesture mistier hastier juster gustier jester bistre mustier booster buster missteer vaster posture moisture taster yeastier rooster chestier wester zestier wasterie waister wristier toaster tester rustier duster lustier rester diaster pasture xyster paster piastre keister ouster pestier rouster masseter roaster kiester bestrew baster foster meister steer stereo muster strew gesture gastrea jouster visiter mister vastier stare poster store feistier coster aster heister caster quester mystery master faster leister easter ghostier moister keyster raster restore lustre roster pester nester keester piaster oyster sister pastier zoster luster dustier diester royster tastier testier wrester toastier waster zester wastery chaster roister shyster yester