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.
sculler scullery squaller sclera scaler squallier sclerae scalier scowler secular suckler sicklier squealer cycler scalar cyclery scalare squalor
culler sculler caller collier gallery killer queller beguiler bugler recaller scullery squaller squallier
scull scall skull oscula oscule