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.
blank blink bullneck baling belong bluing bailing balling bawling belling billing blueing boiling bolling bowling bulling
blank slank flank clank lank plank clang slink lanky slang clink plunk flunk plink alang clonk lang link clanky plonk blink relink clunk lunk slunk