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.
feeless feels fellies felloes flies viewless fuels files floss fleys flews flues flees fells floes fleas flossy fleece folles fellas filles foleys fillies follies vowless fellows fellahs failles flossie flus fils filos foils fools fulls fouls fowls foals falls veals voles fails vales flays flaws flows fills veils folios follis fillos floosy voiles veloce fleecy values fallows folious follows valleys volleys
hueless tieless shoeless toeless feeless less wheelless lawless bless belies coalless sailless reales peles mealless jawless wayless loess awless deles tailless belles boughless toolless soilless gelees vowless wheelies keelless relies rayless melees mailless queleas goalless heelless joyless keyless viewless selles soulless dewless teles galleass toyless bowless les els