Qingjian
Qingjian is a free, open-source education and reference app for Windows, macOS and Linux. 青简 Qingjian：用 Rust 写的拼音输入法，候选词旁多一条正在学的语言的译词. It has 7,275 GitHub stars and is released under the GPL-3.0 license. Its source code is on GitHub at qingjian-team/qingjian.
github.com/qingjian-team/qingjian (opens in a new tab)
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About Qingjian
简体中文 | 繁體中文 | English | 日本語 | Español | Tiếng Việt | Deutsch macOS 与 Windows 版本仍处于测试阶段。安装后先选中青简，在「偏好设置 / 设置 → 通用」选择想学习的语言，就可以开始输入。第一次使用可从第一次输入读起。
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Is Qingjian free and open source?
Yes. Qingjian's source code is public on GitHub under the GPL-3.0 license, which is OSI-approved or FSF-free, so you can use, copy and change it for free.
How do I install Qingjian?
Download the installer for Windows, macOS and Linux from its GitHub Releases page (latest: v0.3.1) or the project website.
Is Qingjian still maintained?
The repository's most recent commit was on Oct 28, 2026. appsgit only lists apps whose repository had a commit in the last six months.