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.
scatt scatty scat scot scad squatty scottie skat sect scut scuta scute scoot skate squat scout socket sickout scud skit
scatt cat cate catty coat boycott vacate locate wyliecoat peacoat recoat regatta scat scatty squatty ducat