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.
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osseins caseins sins casinos cassines zeins missense lysines lessens cuisines hausens cosines eosins fusains fissions essoins basins raisins rosins sasins seisins cassenes sinus sinhs quassins passions resins sense cassinos eosines sines missions lysins scissions cessions loosens cassinas cousins cassenas sains hessians seines sensa sessions
casein casini casino cassena cassene cassina cassine cassino