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.
glogg cloggy clog gleg glug colog gulag galago collogue
glogg log loggy logo blog flog clog cloggy colog sawlog slog dialog duolog
glow aglow igloo goggle goggly googly googol