• How to install Grinvin 1.3.1 on Linux.
• How to install Grinvin 1.3.1 on Windows.

Important Version 1.3.1 of Grinvin needs at least Java version 8.

(Unfortunately we have not yet been able to port Grinvin 1.3.1 to MacOS. For some obscure reason the main Grinvin window does not show up in this version and we have not yet been able to find out why.)