SLIDESHOW: 20 top platforms for analytics and business intelligence by David Weldon via @infomgmt

Tableau, Olik and Microsoft are among the leading vendors in the data analytics and BI space according to a new Gartner Magic Quadrant report.

I've used a few of these - it's an important thing to understand the differences between these tools - I know there are often company wide decision about the preferred tool, but sometimes it is worth investing in a different tool if it gives you a much better result for what you need to do.