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