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.
corse coarse course cors cores cruse gorse coirs carse curse crouse cooers cruise crease coerce creese crosse kors corries carouse cowries crus cris cars curs goers crews gores carrs croze koras cries cures craws cress craze crass gorsy cross crows cares currs kouros caress kersey grease curies coryza caries curios creasy crissa cressy grouse carious carries cuirass curiosa curious curries gars kirs kris
horse worse morse gorse corse torse ors arouse gyrase bourse course arse rise rase morose coarse jersey boars noris koras giaours hearse ours cors nurse wooers grouse doors purse erase zoris browse birse verse phrase cores kors pores crouse roars hydrase yores shoers chores kersey whores urase tours torso rouse torrs prose toros toras pours dors marse drowse oars boras sorus pursue hoars moors serosae soras arose ceruse carse rerise fores burse crosse horsy moras pooris coirs roose horas lours rose rerose prese boors cirrose lores goers hours ores mors parse gorsy gyrose cruse ariose loris carouse ruse ursae curse cooers frise horsey hoers mores arise triose hoarse porose peruse bursae perse brose fours prase force noirs rearouse prise bores gores erose sores cerise sours doers dorrs dorsa druse terse tores torose tors torsi torus soars choirs chorus shores yours
cor coir core coria corrie cory cowrie cowry score scoria scoriae