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.
sulfid sulfide sulphid sulfite sulphide salified selfed sylphid sluffed sulfate sulphite sleighed slaved slight solved salved sleaved sleeved sleight salvoed sealift sylvite salivate sloughed sulphate
sulfid vilified jellified jollified coalified golfed gulfed qualified malfed mollified nullified rolfed salified selfed sulfide wolfed