Ultramarine Linux is a Fedora based GNU/Linux distribution developed by Fyra Labs. It strives to be easy to use, stable, and secure with features to benefit developers as well as casual users. Among the value it adds to a pure Fedora system is the inclusion of additional repositories for software not distributed by Fedora. RPMFusion, which provides, among other software, proprietary drivers for NVIDIA GPUs, is enabled by default. Fyra Labs also enables its own the Terra repository, which includes some software, although not proprietary, is not packaged by Fedora.

Ultramarine provides four downloadable live installation media: a Flagship Editoin featuring the Budgie Desktop Environment, a GNOME Edition, a Pantheon Edition, and KDE Plasma Edition.