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.
skeeter skater skitter skittery secateur scoter sector scatter scooter scutter sectary skidder scouter scattier sequitur skiddier squatter squattier scowder
skeeter quieter picketer pocketer racketeer racketier ricketier rocketeer rocketer