Oh, SSAS/SSIS/SSRS definitely aren't included on Linux currently. I wasn't suggesting they were.

But getting the features of these tools (cubes/OLAP = SSAS, reports = SSRS, ETL = SSIS) for other databases such as Postgres is possible with open source BI tools.

Open source BI platforms like Pentaho, BIRT, Jaspersoft (now owned by TIBCO) roll together families of different open source tools to give the same type of functionality for any DB platform. For example, things like Jaspersoft use the Mondrian OLAP cube engine underneath.

And also, with all the newer engines for data processing (Apache Spark, Hadoop, Ignite, etc.) you also have a lot of new backend options for analytical/report/BI processing also.