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.
opener
opener cheapener ripener deepener panier punnier panner pannier pawner penner pinery pinier pioneer spinnery repiner japanner punier pinner spawner spinner spoonier punner spinier weaponeer caponier spanner shipowner