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.
glens gleans galenas glans galleons galleins gluons cleans glueyness gallons cleanse galloons guylines colleens gluiness kilns clons clans cleanness colins clowns glance clines colons clones clonus colonus collins colones callans kaolins kalians colonies coolness cullions kaolines
lens glens woolens mullens pollens woollens villeins rellenos nylons silenus tolans colons gleans belons ballons talons clons clans halons galleons billons flans solons aliens pleons baleens gallons galleins kaolins lallans melons mulleins paulins ulnas bouillons yeelins colins hyalins uhlans lenis glans collins violins felons flense callans cleans elans liens toluenes salons alans xylans solans lense xylenes leans galenas lins kilns melenas moulins lenos lenes colleens oleins plans poleyns pylons ulans yulans