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.
pupils papillose peplos pipals papules peepuls peoples popples papulose pipeless popeless populous peplus populace
huipils pupils pols appals appels apples fipples hooplas puls hopples pals couples maples keypals peepuls pails repels sepals speils spiles spoils dapples tipples uppiles whooplas nopals peplos poilus huipiles pipals plus popples peplus peoples opals pilus lapels nipples cupels copals piles pilis pills rappels ripples spails spiels spills supples tepals topples wheeples chapels