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.
ficoes ficus fiques fucose fucous figs fogs fucus fykes fecks fucks focus fakes fugues vogues vacuous veggies fix fox
ficoes locoes cos chegoes chigoes tokes wackos decos dioicous scows sokes okes pokes coys geckoes mokes shakoes mucose cocos cues cacaos jokes fucous jockos fucose buckos buckoes boocoos goes shackoes coss cows jucos hokes geckos cocoas coos jocose cogs mucosa locos cokes cosy guacos mucous cooees cooeys pekoes raucous sickos dagoes decoys tacos wackes whackos chicos chokes shackos yokes