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.
pollinate pollenate planate pollened plaint pliant plained polenta palinode plant planed planet plenty planned
pollinate lanate lineate lunate alienate kaolinite melinite planate pollenate selenate slainte delineate lint