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.
regear roger ridgier
headgear regear gear dogear tiger sedgier budger laager hedgier cager badger auger ager judger ledger leger wedgier gauger pudgier luger meager pager ridgier sager sauger dodger dodgier codger lodger eager liger edger gager roger hedger ledgier lager jaeger jager cadger eger wager dodgery booger sagier huger logier mauger nudger podgier cagier edgier gouger yager