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.
uneasy unease unais unaus unsay uns unnoisy unsew
uneasy newsy hyenas whenas weans unease tineas tansy deans scenas peans pansy paeans hyponeas leans beans queans guineas jeans veenas faenas teensy tonneaus means weensy hyaenas yeans