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.
briber bribery beriberi barber barberry bearberry
briber rubbery shrubbery drabber orbier grubber grabber cribber crabber ribbier ribier robber robbery rubber ribber barber rubier beriberi bribery forbear forebear herbier gerbera crabbier curber grabbier grubbier prober drubber shrubbier
bribe bribee barb barbe barbie burb