[en] An interactive multimedia tool, Nuclides.net, has been developed at the Institute for Transuranium Elements. The product is aimed at both students and professionals for reference data on radionuclides and computations based on internationally evaluated data. Based on the latest Internet technology Nuclides.net is ideally suited for education and training purposes in the nuclear related fields, such as radiation protection. Professionals can do calculations quickly and reliably using qualified radionuclide data. The Nuclides.net 'integrated environment' is a suite of computer programs ranging from a powerful user-friendly interface, which allows the user to navigate the nuclides chart and explore the properties of nuclides, to various computational modules. Among them, the G- D.O.S.E. dosimetry and shielding module allows the user to calculate gamma dose rates from point sources of single nuclide and mixtures. The user can alternatively obtain a dose rate through a given shield material and thickness, or a shield thickness of material required to obtain a given dose. More than 3000 nuclides are available in the Nuclides.net database for dosimetry calculation. In addition, the user has a choice of 10 shield materials. A results details window shows the contribution of each gamma-line or x-ray to the total dose rate, detailing the calculation of the mass absorption of the absorption coefficient, the interpolation of the build-up factors from the tabulated N.I.S.T. values and the calculation mass absorption coefficients. In its future new edition, to be released by mid-2006, a R.A.N.G.E. module, based on the S.R.I.M. engine (see. www.SRIM.org), has been added. Through an intuitive interface, the user can perform range and stopping powers of charge particles - electrons, protons, or any ions - in matter. The user can used predefined target or create his owns to fit best his needs. This module complements perfectly the R.A.N.G.E. module for radioprotection calculations, e.g. for assessing the shielding thickness for alpha or beta radioactive sources. A detailed description of these modules and some potential applications, in particular for education and training, are discussed in the present paper. (authors)