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.
squalls squeals squills squillas sculls skulls scalls sequels seagulls skells scales skills skoals suckles skilless secalose suckless sequelize scowls siglos socles sokols cicalas sickles zocalos
squalls quells squills calls seagulls scalls coequals faucals equals begalls quolls quills quails callas gulls gallus galls culls cullis callus recalls sculls skulls squeals teocallis
squall squally squeal squill squilla squillae