A new version of OpenGammaSpec is available. It can be downloaded from SourceForge.net (project 'OpenGammaSpec') and is located in the 'NewVersion' folder. The Linux version is currently available; an existing version can be updated without data loss using the script 'upgradeGamma.sh'. The Windows version is still in progress but will be available soon.
The generation of the 'Regions of Interest' has been expanded and improved, the Np-237 decay chain has been unlocked, a different background file can be loaded 'on-the-fly', and more. I will write a post about this shortly.