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.
spiels spills spoils spells speils spails spiles speels supplies spools sepals splays spalls splice spales sapless supples sepalous soapless soupless
spiels poilus spells speels replies repeals lapels rappels huipiles huipils applies appels appeals polies duopolies spoils uppiles spiles pails peals cupels spills plies speils spails repels pupils reapplies pilus peels peles piles pilis pills tupelos supplies chapels
spiel spail speel speil spell spile spill spoil espial