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.
caged cadged gaged gauged gadget gouged kedged gadgety
caged gaged waged aged raged paged ged gied lodged hedged noodged sieged ridged badged budged kedged gouged fudged luged fidged judged edged boogied nudged geed gauged fadged rouged cadged dodged wedged
cage cagey cadge cadgy cagy gage