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.
viewless vowless voiles feeless vails vills files vials voles veils vales veals viols veloce villas violas filles villus values villous volleys felloes valleys failles fils fuels fails flies fleas foils fills fleys flees fowls flews feels floss floes flues filos fells fellas fillos flossy foleys folles phials valise
awless viewless lawless jawless bowless dewless vowless less sailless tailless toolless joyless mealless tieless hueless heelless soulless wales coalless wiles galleass wheelless goalless wayless keyless rayless toyless keelless soilless loess wyles feeless mailless toeless bless boughless shoeless les