Fcitx

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Fcitx

Fcitx in use with the font WenQuanYi Zen Hei Mono
Original author(s)	Yuking
Developer(s)	Yuking, CSSlayer
Initial release	August 28, 2002; 22 years ago (2002-08-28)
Stable release	5.1.12 / January 23, 2025; 7 days ago (2025-01-23)
Repository	github.com/fcitx/fcitx (Fcitx) github.com/fcitx/fcitx5 (Fcitx 5)
Written in	C (Fcitx) C++ (Fcitx 5)
Operating system	Linux, FreeBSD
Available in	Chinese
Type	Input method
License	LGPL
Website	fcitx-im.org

Fcitx ([ˈfaɪtɪks], Chinese: 小企鹅输入法) stands for Flexible Context-aware Input Tool with eXtension support, is an input method framework with extension support for the X Window System that supports multiple input method engines including Pinyin transcription, table-based input methods (e.g. Wubi method), fcitx-chewing for Traditional Chinese, fcitx-keyboard for layout-based ones, fcitx-mozc for Japanese, and fcitx-hangul for Korean.

It supports UTF-8, GBK and GB 18030 character encodings, can run in Linux and FreeBSD, and supports XIM protocol, GTK+ (both 2 and 3) and Qt input method modules.

Before version 3.6, Fcitx used GBK encoding internally, which has been changed to UTF-8 in the 4.0 release. Since version 4.1, it has become highly modular, and has added support for Google Pinyin (which was ported from the Android version), fbterm, and KDE. The license was changed in the 5.0 release, from GPL to LGPL.