Quiqr is available for Mac, Windows and Linux. Here are the latest installers.
Download older versions and installers for other platforms on GitHub.
Open disk image and copy Quiqr.app to your Applications folder.
After download, ignore security warning and execute the .exe-file to install Quiqr.
AppImage, should run on any Linux distribution. Having troubles on Ubuntu? Install libfuse2. More Linux packages are available.