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.
larky lark lurk largo
larky barky narky darky sarky ark croaky perky sark quirky euroky corky dorky turkey quark dark creaky park murky wark charka nark chark cark mark porky cracky darkey freaky parka lark mirky tarok hark jerky bark braky marka forky arak shark
lar lear glare lair laree lari laura laurae laari liar leary alar alary blare flare claro clary glary