Fcitx

Fcitx (Flexible Context-aware Input Tool with eXtension support) [ˈfaɪtɪks] is an input method framework with support for many languages and scripts.

Using Fcitx
In order to use Fcitx in X, the following environment variables must be added to start up files and exported:

When using login managers such as GDM, KDM or LightDM to start the X server add them to the file. When using the startx command or SLiM to login, add them to the file.

If the  or   USE flags where used upon installation,   (in the examples below) will be , otherwise it should be.

Remember, make look like the example below only if using startx or SLiM to start the X server:

It is recommended to start the D-Bus session bus before Fcitx starts. Add these to the beginning of the X start up file ( or ):

Configuration
Edit Fcitx's configuration file at

Also, there are GUI tools to configure Fcitx. Install (based on GTK2 or GTK3) or  (based on KDE) to use them.

Frontend
Other than the built-in classic UI, there is also a frontend which integrates into KDE well called Kimpanel (included in ). The  flag must be enabled to use Kimpanel. Once installed, add the kimpanel plasmoid to the plasma panel and fcitx will switch to it by its self.

Chinese
Fcitx itself has built-in pinyin support. Enabling the  USE flag will provide multiple table-based input methods such as WuBi and Ziranma.

Install to have better results in the candidate words list.

The built-in pinyin use a simple algorithm, and there are other pinyin input methods using other algorithms. Install, , or to use them.

For Bopomofo support or  can be installed.

For Cangjie or Boshiamy support install.

Japanese
Install :

Korean
Install :

Vietnamese
Install :