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.
squatter squattier scutter scatter scattier skater scouter skitter secateur sequitur skittery ciguatera scoter scooter skeeter sector
scatter squatter gater scattier ciguatera cattier coater cotter cottier cutter gaiter cater secateur gutter guttier quitter boycotter locater negater cattery scutter skater skittery guttery skitter squattier