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.
cousins cosines cosiness cuisines caseins casinos cassines quassins cassinas coziness cassinos cozens queasiness gossans caissons cassenas cassenes gossoons gassiness gauziness
cousins sins fissions fusains hausens hessians caseins casinos eosins essoins lysines missions osseins raisins rosins sasins seisins quassins sains cassinas cassinos sinus sinhs sines cassines cosines eosines basins cuisines leucins lysins mucins passions resins cessions scissions sessions