vndangkhoa/vietc

Viet+ is a Vietnamese typing tool for Linux, written in Rust. It lets you type Vietnamese text using either the VNI or Telex input styles, both common ways of adding accent marks and tone marks to Vietnamese words using a regular keyboard. Most Vietnamese typing tools on Linux work by holding your keystrokes in a temporary buffer while you type, showing an underline until you finish a word, and only then converting it to the final Vietnamese text. The author built Viet+ to avoid that approach entirely. Instead, it converts each keystroke straight into the correct Vietnamese character as you type, with no underline and no temporary buffer, so what appears on screen is always the final text. It does this by directly injecting keystrokes at the operating system level through a Linux input device. The tool includes a system tray icon showing whether it is in Vietnamese or English mode, remembers your preferred language per application, supports common shortcuts like typing ko to expand into khong, and automatically turns itself off in password fields so it does not interfere with sensitive input. It works across many terminal programs and supports both the X11 and Wayland display systems used on Linux. Installation is a single script that detects your Linux distribution's package manager, compiles the program, and sets up the permissions needed to read keyboard input directly. It is tested on Ubuntu, Debian, Fedora, and Arch-based systems, with partial support on a few others. You can also build it manually from source using Rust's Cargo tool if you prefer. The README warns that the project is still under active development and that, because it operates directly on keyboard input devices, a serious bug could in theory affect keyboard behavior on your system, so it should be used with some caution. The project is open source under the MIT license.