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.
brags brigs bergs burgs breaks barcas burqas burkas brakes bourgs burgoos berakes brogues barracks borks braxy birks barks borax berks brocks brooks bricks burkes breeks barques birkies bureaux baroques brookies brux
rags brags crags drags frags bergs progs parkas frogs orcas rigs largos frigs burkas virgas ragas cargos regs viragos sorgos dregs teargas trigs trugs choragus rugs burgs frugs raggs rerigs prigs pargos araks markas grogs ergs barcas grigs argus sargos seracs brigs bourgs burqas drugs tragus trogs charkas shrugs
brag braggy berake berg brake braky break brig brogue burg burgoo