Essbase began as a product of Arbor Software, which merged with Hyperion Software in 1998. ... Hyperion renamed many of its products in 2005, giving Essbase an official name of Hyperion System 9 BI+ Analytic Services, but the new name was largely ignored by practitioners.

What is Hyperion called now?

Oracle Corporation announced on March 1, 2007 it had agreed to purchase Hyperion Solutions Corporation for $3.3 billion in cash. The transaction was completed on April 18, 2007 and Hyperion now operates as a division of Oracle. Oracle extended support for most Hyperion products (v11. 1.2.

Is Essbase still used?

The Essbase product that Oracle has today still carries the same core values, although its technology is light years away from the one which was released 20 years back.