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.
gorse corse goers gorsy gores grouse course grease coarse kors gars cors grass guars cruse gross grows koras coirs carse grees cores grues gaurs curse graze gurus greys grace grays kouros crosse kersey cooers crouse creese greasy cruise guiros grassy coerce crease carouse corries cowries gurries cars cris crus curs 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
gor goer gore gory agora agorae