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.
slobber slobbery slobbier slabber slubber slabbery syllabary
lobber slobber clobber slobbier flubber slabbery slabber globbier glibber clubbier clabber clubber flabbier blubbery blubber blabber lubber slobbery libber slubber