The JavaScript InfoVis Toolkit is a free set of tools for creating interactive data visualizations compatible with web standards. Visualization options include bar graphs, radial graphs, tree graphs and more, many integrating animations.

R is an open source programing language designed for statistical analysis and parallel computing. R began its life as a research project at the University of Aukland, but has since expanded to become a collaborativly run open source project run by the GNU. R has libraries for data import, regular expression data splitting, and visualization of data. R can be run as either a script or as a working environment.

Quadrigram is an environment for data gathering, query and visualization, based on a visual programming language and intended for users with no experience programming or creating visualizations. At present, it contains 50 different visualizers.

Dataplot is a free software system for data analysis, including characterization, visualization and modelling. It was developed in FORTRAN 77, and has been in continuous development since 1978. Dataplot is well-documented, with numerous tutorials for using and extending it. In addiiton, over 30 graphic types are supported, such as histograms, box plots, scatter plots and normal probability plots. This tool is currently available in Unix, Linux, OS X and Windows versions. Dataplot is open source, but is trademarked rather than licensed.

draw.io is an online diagramming application built for speed, reliability and simplicity. It features the full range of visual configuration you expect, as well as web application features such as a full range of export options, a large collection of icons, real-time collaboration and embedded widget sharing. It features particularly notable integration with a variety of collaborative platforms including Google Docs/Apps.

RStudio is an integrated development environment (IDE) for R. It is available in both open source and consumer versions, and can run either on your desktop, or through a browser connected to RStudio Server. Features include syntax highlighting, code completion, smart indentation, and an interactive debugger.

Zoho provides a drag-and-drop interface for creating database-driven applications, such as forms.

Minitab provides tools for statistical analysis and visualization. It includes tools for creating graphics, and working with variance, regression, reliability, sample size, time series, forecasting, equivalence tests, tables, simulations, and distributions.

A set of dataset management and statistical plugins which is only available for Microsoft Windows including single and multiple linear regression, polynomial regression, and scatter plot with fit, fit confidence and prediction bands. The program can be used to generate visualizations and data reports. Requires Microsoft Excel.