UIM
Uim is a multilingual input method library, whose goal is to be a flexible development platform and useful user environment for input methods of all languages.
fcitx
Fcitx ['fa?t?ks] is a input method framework with extension support. Currently it supports linux and Unix system, like freebsd ...
iBus
Intelligent Input Bus. Input Method for many languages especially CJK (Chinese, Japanese, Korean) but not only...
scim
The Smart Common Input Method (SCIM) platform project provides not only a user friendly, full featured input method user inter ...