The world of business intelligence (BI) and more generally Data Analytics is very diverse and involves many players. However, we can classify them as such:
- Free/open source tools such as QlikView personal version, Microsoft Power BI, Pentaho, SpagoBI etc.
- Proprietary or paid tools such as SAP BusinessObjects, Tableau, SAS, Microstrategy BI etc.
Regarding the first point, let's quickly clarify to avoid misunderstandings, free ≠ open source.