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.
violones violins vileness violence valines villainies villainess felonies villeins valonias villains foulness felons flanes fallowness felines valence valance flounce fulness fellness fullness valiance felonious flans villainous flense
violones clones colones chalones looneys pillions valines beelines loans pleons malines bowlines fullness leones chillness illness jillions guylines halons loins lines lioness bylines foulness lions coolness shalloons felines lanes wellness tolanes salons tallness dulness realness zillions solons fellness mullions millines reloans colons galleons clonus galloons baloneys balloons silanes flanes felonies millions colonies boloneys pylons gluons aloins solions kaolines talions billions belons ballons ballonnes gallons melons lenes alines nylons towlines eloins billons cholines dullness cullions talons clowns clons bouillons jawlines bullions hellions colonus salines felons fulness clines loonies loons lunes planes relines saloons xylenes hyalines