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.
slog sawlog slag slug slaggy silk sulk salic silky slack slake sleek slick sulky
log blog flog clog colog sawlog slog dialog duolog