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.
jalop jalopy jaloppy jalap julep
jalop galop lop alp wallop kalpa slope loop flop lope salp loup salep bloop palpi elope sloop lollopy jalap palp collop plop gallop saloop glop salpa jalopy slop lollop dollop clop shallop