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.
skylike sacklike saclike skulk cyclic
quaylike skylike taglike jiglike peglike oaklike baglike beaklike fuguelike hawklike hoglike hooklike aguelike rocklike lakelike cocklike leglike lookalike necklike nooklike peaklike piglike ruglike saclike cokelike sacklike doglike wiglike