R is a statistics programming language used in data analysis and visualizaiton. This is a free and open source programming language that you can download and use for free.
This is a community site for R spondored by Revolution analytics. Come here to get the latest codes, tools, and how-to advice for R. This site also provides leads to data sources, some of which are free.
This R blog site maintained by Revolution analytics focuses more on news and industry uses with R. The blog's topics are broken down by industry such as finance and life sciences as well as beginner tips and current events.
Qlikview works in conjunction with data warehouses, databases, and spreadsheets such as SAP, Oracle, and Excel. It stores data in memory and is processed on servers. The Qlikview engine allows its users to analyze data and create business intelligent apps for displaying and sharing business intelligence. Qlikview offers a free download of their Personal edition.
Tableau is a business intelligence software that works with data sources and databases. Tableau has a drag and drop interface where you can drag data into the mainframe and the software will configure it into graphs, charts and tables that you can then manipulate and share.