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.
folksy folks folkies flacks flakes flecks flicks flocks flukes flags flaxy flics flocs flogs
folksy leks yelks whelks tilaks talks silks milks balks baulks beyliks bilks bulks elks folks holks hulks ilks calks caulks kliks kulaks polkas sulks taluks walks chalks yolks
folk folkie folky flak flake flakey flaky fluke flukey fluky folic