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.
unsew uns unease unais unaus unsay uneasy unnoisy unci
unsew guanase sonsie sensei sansei rinse renews mense manse nonuse mannose lionise linsey lense lanose nose donsie kinase ionise pensee tense dense sinews sense cense rennase nonnews news mensae anise ansae ensue venose hanse chainsaw