Interactive analysis and reports provide managers and controllers with ad-hoc answers to critical questions and give valuable, deep insight into business processes. IBM/Cognos Executive Viewer is probably the most efficient and most comprehensive ad-hoc analysis tool for Oracle Hyperion Essbase, Microsoft Analysis Services and TM1 in the marketplace.
Executive Viewer enables users to leverage the full potential of their OLAP database in real-time. The user interface meets the needs of managers and is intuitive so that inexperienced users can quickly and easily create interactive, dynamic analyses and reports.
on 01/03/2013 cubus launched its own version of the Web-based front end branded as “cubus outperform EV Analytics”. The new product is fully compatible with the current version of Executive Viewer and will continue to support Oracle Essbase, Microsoft Analysis Services and IBM Cognos TM1 as OLAP platforms.
You can find more informations about the new product here