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.
flagger flaggier flogger flaker flakier filagree flackery fillagree flicker flukier folkier filigree flickery flockier fulcra vulgar
flagger lagger slogger leaguer leggier logger loggier lugger beleaguer flaggier blogger flogger clogger cloggier plaguer plugger slaggier slugger