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.
ripples reapplies rappels replies repels repeals replace replays replows repolls repulse
fipples hopples topples ripples popples tipples apples supples dapples nipples soapless appels papules lipless reapplies cupules capless poles peles plies hapless couples supplies applies gapless zeppoles zipless dipoles hoopless wheeples hipless peoples pules replies maypoles plews maples huipiles pales piles appals nopales soupless pleas diploes tipless rappels napless spales spiles sapless uppiles topless shipless
ripple ripply ripely cripple gripple drippily triple triply