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.
keyless keelless kayles kellies koels keels kales queleas killies colessee goalless galleass coalless glues glees kails coles clews kolas kilos clues kills class glass kolos gules gloss gales gleys kohls galeas glossy glassy colies classy coleus guiles caules quells calesa koalas glossa glossae gullies gallies glassie collies galleys colossi coolies gulleys callees goalies cullies coulees
joyless rayless wayless keyless toyless less mailless wyles loess toeless lawless coalless bless awless mealless tieless soulless doyleys tailless wheelless shoeless goalless doylies kayles hueless bowless toolless vowless heelless hoyles jawless boughless sailless viewless keelless galleass dewless feeless soilless chyles yules les