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.
jigs jigsaw jogs jugs gigs jags gigas jaggs gigues jaggies jackies jouks jukes gecks jucos geeks jokes jocks jauks jakes jacks jukus
bigs figs vigs gigs jigs migs pigs rigs cigs zigs digs whigs wigs