Rizom-Lab released RizomUV 2019.1 VS and RizomUV 2019.1 RS.
The Linux edition of the software, previously available in beta, is now a stable production release. The tool is compatible with Ubuntu 14.0 and above and CentOS 7.6.
What is more, the update brings the ability to generate stacked groups from overlapped UV islands. Also, you can switch the up axis of the 3D viewport between the X, Y, and X axes to fix orientation (importing from Blender or Maya).
Features:
RizomUV 2019.1 VS and RizomUV 2019.1 RS is compatible with 64-bit Windows 7+, macOS 10.12.5+ and Linux. You can learn more here.