WebCKC
It is also possible to use the CKC Chinese Input System without installing it on a PC. The WebCKC allows any PC connected to Internet using the MS Internet Explorer to input Chinese Characters using the CKC Chinese Input System.
You can try out the traditional Chinese version or the Simplified Chinese version . Note that you need to use keyboard with numeric keypad in order to input Chinese with this method.
Text entered are stored in the clipboard and therefore ready to be pasted to any desired application.
Read more about this topic: CKC Chinese Input System