MobilityDB, hence PostgreSQL and PostGIS. The installation instructions can be found here.
<listitem>MobilityDB-BerlinMOD. Get the generator from Github here.
</listitem>pgRouting. The installation instructions can be found here. The minimum version required is 3.1.0.
Download the OSM files for Brussels here. Extract the archive in any folder. In the following we refer to this folder as generatorHome.