Knowage (formerly SpagoBI) has a 14-years history. The actual release is the 6.3.
Knowage offers FULL ANALYTICAL CAPABILITIES, with a special focus on big data analytics and comprehensive support to rich and multi-source data analysis. Knowage provides different modules, each one focused on a specific domain but mutually combinable (Big Data, Smart Intelligence, Enterprise Reporting, Location Intelligence, Performance Management, Predictive Analysis). Moreover, Knowage is an OPEN SOURCE...
It's an open-source product; we use the open-source edition for Knowage.
Knowage is open-source, and an enterprise edition is also available.
They have different licensing models. I'm about 50% happy with the options available and the pricing.
Still we are using community edition as the base. On top of this we have our own feature implementations.