Download the latest release.

1. Install Swi-Prolog (v7+).
2. Type make on Windows or make unix on Linux.

This should work on any system that can run Swi-Prolog.

You may have to set COSM_PATH manually and use make base on some systems. Otherwise, Cosmos is cross-platform.

You can test that the installation has succeeded.

$ cosmos -v
"Cosmos 0.xx - (Pl)"