Vigyaan (http://www.vigyaancd.org/) is an electronic workbench for bioinformatics, computational biology and computational chemistry. New in version 1.0: Based on KNOPPIX v3.7, most software packages updated, new applications added. At present the following ready to use software comes on VigyaanCD: Arka/GP, Artemis, Bioperl, BLAST (NCBI-tools), ClustalW/ClustalX, Cn3D, EMBOSS tools, Garlic, Glimmer, GROMACS, Ghemical, GNU R, Gnuplot, GIMP, ImageMagick, Jmol, MPQC, MUMer, NJPlot, Open Babel, Octave, PSI3, PyMOL, Ramachandran plot viewer, Rasmol, Raster3D, Seaview, TINKER, XDrawChem, Xmgr and Xfig. GNU C/C++/Fortran compilers and additional Linux tools (such as ps2pdf) are also available. VigyaanCD also provides tools required to compile and install other applications (from source). Therefore, making testing of 'Linux' applications possible on computers with other OS.