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.
rappels repels reapplies repeals ripples replies replows repolls repulse replace replays
appels rappels tupelos tipples supples spells speels repels repeals popples nipples lapels cupels hopples fipples apples appeals appals peles peels peals ripples speils spiels dapples topples chapels