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.
corset cruset cresset coursed curst crest crust crista crusty cursed goriest creased crusade cristae coerced crossed cruised caroused grisette crosstie caressed creosote karst grist crosshead cuirassed curiosity cariosity crazed grassed greased grossed groused querist queerest
verset worset corset first cursed russet cruset verst versed frost hearsed worst wrist burst barest aurist arrest aorist reseat cresset dourest sheerest wrest preset tryst tourist queerest lyrist nearest parsed durst rarest grist purist searest sorest surest diarist prost erst roset verste hurst rust jurist horste trust crest pursed coursed forest fairest rest drest russety crust verist purest horsed poorest horst dearest sourest serest rearrest curst tercet airest nursed prest merest querist karst reset direst wurst yarest
corse cors kors gorse curs crus cross cris cressy cress crass cowries course coryza corries cores coirs coerce coarse carse cars crissa crosse cruse curse gorsy scores