A free and open source desktop application for browsing nuclear data in the Chart of Nuclides / Segrè chart format. Uses nuclear structure data from ENSDF, masses from AME2020, and isotopic abundances from NIST. All data is stored locally and the application runs completely offline.
A full list of features is here, and a user manual with detailed documentation is here.
Get the latest release and follow the installation instructions there.
Alternatively, the application can be built from source using the instructions here.