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.
sestet zested cestode cisted cestoid seceded
stet sestet vested heisted foisted fisted ghosted lusted nested lasted misted fasted gusted pasted roasted gasted coasted rousted jousted wrested hoisted feasted busted dusted tested waisted whisted chested reested hasted musted quested jested stat stot basted histed boasted boosted bested masted listed ousted joisted posted hosted rested guested roosted costed rusted justed cisted zested tasted toasted wasted wisted yeasted
cesta cesti cestoi seaside seised siesta zest zesty