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.
carious curious carouse caries crouse curios cars crus cris curiosa carries carrs crows cares cries cruse carse cross karoos crosse caress course kauris coarse cruise curies grouse kaross crissa curries corries karroos cowries kauries kris gars cors curs quarries carassow coirs cress craws gross cures guars gaurs curse croci gurus croze corse crass grues crews kurus cores grows currs kyries cooers cressy creese guiros creasy crease kouros cuirass gurries kerrias kerries quaeres queries
furious carious curious various serious triose torous ferreous serous curiosa cirrous aurous rearouse furioso parous carouse arouse brios hydrous arioso ariose trios vrouws ferrous curios roues cerous grouse barrios rouse ariosi crouse porous cheerios