While trying to build a web based cube browser, using the pivotgrid control of devexpress, in one of our projects, came across some products with excellent features.
KPIonline - When you sign up for a free account, you get access to the dashboard which has a very good cube browser with a lot of additional features.
GoodData - Also has a cube browser, but i was not impressed except for some functionality.
Openi - OpenI is an open source Business Intelligence application for on-demand or SaaS deployments. Based on J2EE, OpenI is an out-of-box solution to easily visualize data from OLAP and relational databases, where users intuitively build and publish interactive reports, analyses, and dashboards. Offers a good hands on lab demo in their website.
Palo - A Commercial Open-Source BI solution for Corporate Performance Management and OLAP-based planning, analysis and reporting. Looks like more of an add in for Excel.
