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.
glance glans gleans cleanse guylines gluiness glens clans glueyness cleanness clines cleans clones gluons galenas gallons callans colones kalians colonies colonise colonize coolness galleins galleons galloons kaolines
lance glance reliance dalliance valiance alliance valance balance launce pliancy cleanse silanes flanes violence salience flounce planes lianes valiancy valence silence lanes tolanes