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.
rogues roques rugous raggees reggaes raggies raucous rookies roux rocs rigs rags regs rugs recs reeks rocks ragas rakes rakus rucks raggs recks rykes rooks rakees recuse rekeys ruckus rugosa rugose wreaks wrecks rickeys rex
agues fugues segues vogues leagues togues rogues gigues kagus moggies goes fiques magueys luggies bogus biggies negus raggees magus piques dagoes reggaes roques kues fugus rugous buggies queues cheques cues nukes caiques raggies cukes teguas queys jaggies gaes jukes vagus piggies doggies toques ukes pukes baggies aggies guess veggies guys dukes tuques chegoes muggees chigoes
rogue roque argue brogue frog froggy grog groggy prog drogue drouk trog