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.
yowies yowes
towies newies yowies wis wiss iwis yowes twice howes ewes knawes lweis lowes lewis kiwis awes owes weewees wise wees nowise peewees swiss ywis pewees twaes woes waes