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.
cliched clutched clashed coalshed claucht glochid galoshed glochidia
cliched latched slouched polished leached leched leeched letched belched bleached blotched filched fleeched fletched flitched clutched mulched pleached relished welched
cliche caliche clach cloche culch