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.
crus cruse crouse cruise cors curs cars cris curious carious carouse cores coirs crass crows cress cries crews corse kurus grues cares carse carrs cross curse craws gurus currs cures caries cooers creasy crease grouse cressy creese caress curies crissa crosse coarse curios course cuirass carries curiosa corries curries cowries kirs gars kris carassow kors curassow goers gores koras grays gorse crazy croze gaurs gross croci kiers grass grees greys gorsy grows guars craze keirs
varus virus gyrus crus gurus kurus nairus cirrus sorus xerus torus urus chirus chorus