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.
welldoer welder weldor wielder wieldier welter wilder
welldoer lader folder fielder holder elder builder eluder moulder slider older soldier molder melder deluder killdeer weldor golder wielder colluder wilder gilder shoulder colder bouldery alder moldier collider aulder balder gelder blader bolder balloter mouldier solder polder boulder solider milder welder malodor bowlder guilder wieldier glider shielder caldera yielder
weld weald welladay welled wield wieldy swelled dwelled