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.
placid placed palaced pulicide pellucid placet palsied pleased policed poolside palisade playsuit pulsed paliest pollist poloist pulsate palliest pilosity
placid laced lucid alcid belaced filicide culicid palaced pellucid placed pulicide relaced silicide solaced chalcid
place palace palais palazzi palazzo pilaus pilaws plaice plays plaza pleas please splays