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.
cicala cicale cecal cecally cycle cyclo scale scall scaly sigla sickle sickly zocalo squilla squillae
cicala call faucal fecula calo caul facula clay coal claw recoal cecal cicale pical scall locale zocalo laical declaw jackal ducal vocal calla gala regalia faecal fecal bacalao qualia bacula galea galah koala recall coala cola macula scale local scaly caecal decal jacal dewclaw focal tical