Orsay, September 27, 2000 The first version of the NUBASE evaluation of nuclear and decay properties has been published in Nucl. Phys. 624, Sept. 29, 1997. NUBASE has been set up by G.Audi, O.Bersillon, J.Blachot and A.H.Wapstra. It contains experimentaly known nuclear properties, and some that have been estimated from extrapolation, for 3010 nuclides in ground-state, 669 of them in first and 58 in second isomeric states: mass, isomeric excitation energy, half-life, spin, parity, decay modes and intensities. All the information are properly referenced; this traceability allows any user to check the recommended data. An electronic (ascii) file for the NUBASE table, for use with computer programs, is distributed by the AMDC. This file will NOT be updated, to allow stable reference data for calculations. Any work that will use that file should make reference to the Nucl. Phys. paper and not to the electronic file. DISPLAYING NUBASE Two programs have been written to display the contents of NUBASE in a user friendly environment. 1 - For PC computers, the program NUCLEUS has been further developed and integrates now an "Educational" display. The later has been written in collaboration with the Palais de la decouverte, Paris, for the "Centenial of the Radioactivity" exhibition. NUCLEUS can be downloaded from the AMDC as explained in file nucleus.status (ascii). 2 - Directly from the AMDC Web: jvNubase is a JAVA applet that can be run from any JAVA compatible browser. Both display programs will be updated regularly to allow the AMDC user to check for the latest available information in NUBASE. Previous publications on NUBASE: Description of the goals, policies and procedures adopted for NUBASE can be found in: Nucl. Instr. and Meth. in Phys. Res. A 369 (1996) 511. See also the PostSript file "icrnubase.ps" from the AMDC.