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.
seagulls sculls skells skulls scalls squalls squills sequels squeals squillas secalose skoals siglos skills skilless sequelize scales scowls socles sokols
seagulls gulls guls ligulas squalls begalls sculls regulus moguls ligules quills quolls quells gules galls culls cullis skulls squills