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.
caliph kaliph calif coalify calf calve clavi cliff glyph kalif cliffy clivia clough qualify
caliph kaliph aleph alpha glyph ralph sulpha sylph sylphy
call calla callee callow calo caul coal coala coaly scale scall scaly