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.
flossie floosie floss flossy falsie filose foliose floozie floes filos false flows flies folios floosy fillos feeless fallows villose fellies felloes folious follies fellows follows fillies flus fils fells flues fowls fools flaws fleys flees fulls flays falls fleas flews fills foals valse fouls fails files foils fuels feels foleys veloce valise filles fellas floozy fleecy follis fleece folles failles fellahs phyllos villous vowless
flossie lassie floosie jalousie colossi glassie glossae