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.
round rondo ruined rondeau rind rynd rand rend runt randy ranid runty rindy reined rained runout rainout reendow reigned reunite ruinate rant rent
found bound sound wound mound hound round pound monde coned honda count bund mount bond mondo phoned zoned poind tondi honed maundy gonad undo toned sonde fund monad rondo neoned fount undy fundi maund fondu tondo unde boned condo fond zooned mooned pond tuned yond
run irone trona prune prone krone krona crony crone irony iron roan runny rune ruin ruana rouen drone trone