Default choice
Windows
ZIP x64
Extract the complete archive, then start praktiKST.exe. No separate Java installation is required.
Download →Stable release
Download KST4Contest
Choose the package for your operating system. Official builds are published through GitHub Releases, and the required Java runtime is already included.
Packages by platform
Choose the format that fits your system
Default choice
Linux
Flatpak (.flatpakref)
Installs through Flatpak and can be updated through Flatpak or the desktop software centre.
Download →Linux
AppImage x86_64
Portable build without package installation. Make the downloaded file executable before the first launch.
Download →Debian / Ubuntu
DEB amd64
Native package for Debian, Ubuntu and distributions based on them.
Download →Fedora
RPM x86_64
Native package built for Fedora and compatible RPM-based systems.
Download →Arch Linux
pkg.tar.zst
Release package for direct installation with pacman. AUR alternatives are described in the installation guide.
Download →macOS Apple Silicon
DMG arm64
Best-effort build for Apple Silicon Macs. The application is not currently notarized by Apple.
Download →macOS Intel
DMG x86_64
Best-effort build for Intel Macs. The application is not currently notarized by Apple.
Download →Manual English
English PDF manual included with the Stable release.
Download →Manual German
German PDF manual included with the Stable release.
Download →Choosing a package
Which file should I use?
Windows users normally need the x64 ZIP package. On Linux, Flatpak is the practical choice when updates should be managed through the desktop software centre or the Flatpak command line. The AppImage is useful when a portable file is preferred, while DEB, RPM and Arch packages integrate with their respective package managers.
macOS packages are provided for Apple Silicon and Intel systems on a best-effort basis. They are not currently notarized by Apple. The installation guide covers the first launch, updates, the Stable, Beta and Nightly channels, and the location of the settings directory.
Development and infrastructure
KST4Contest is developed independently. If it is useful in your contest workflow and you want to help cover continued development, testing and infrastructure costs, the support page explains what project contributions are used for.