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.
cleans cleanse clans gleans cleanness callans glans clons glens colleens clowns clones clonus colons clines colins kalians collins colonus galenas colones galleins galleons colonies coolness cullions kilns glueyness gluons callowness glance gallons kaolins colonise colonize galloons gluiness guylines kaolines
leans gleans cleans flanes villeins flense callans lanes clans lenos lenes lenis galleons galenas cleanse kalians baleens elains melenas mullens plains plans poleyns rellenos silanes solanos xylans tolanes toluenes ulans woollens villains lense lauans lawns xylenes tolans silenus solans pollens reloans planes pleons mulleins oleins glens lallans lianes woolens uhlans elans lianas glans galleins colleens lens blains flans aliens alans loans llanos liens yulans