Many people have their different email networks like Yahoo, Gmail, AOL, Facebook and many more so can you with just one IM clients installed on your pc talk and chatting with your friends on other different mail networks without needs to install all IM apps. The solution is available to solve this problem, it’s called multi-protocol clients.There are some great multi/Dual /Single protocol instant messaging apps out on Windows, MAC, Linux or Smartphones So which one is the best to use?