If you are tired of using Excel to create charts and graphs, then you can try these free apps listed below:
- JFree Chart- Java chart library that makes it easy for developers to display professional quality charts in their applications
- XML/SWF Charts- A simple, yet powerful tool to create attractive charts and graphs from XML data
- FusionCharts Free- A flash charting component that can be used to render data-driven & animated charts for web applications and presentations
- Timeplot- A DHTML-based widget for plotting time series and overlay time-based events over them (with the same data formats that Timeline supports)
- Flare- An ActionScript library for creating visualizations that run in the Adobe Flash Player
- Chronoscope- Turn tables into time machines. Embed the widget into web pages
- JS Charts- JavaScript based chart generator that requires little or no coding, uses client-side scripting (i.e. performed by your web browser)
- ggplot- ggplot is an implementation of the grammar of graphics in R
- R- software language and environment for statistical computing and graphics that provides a wide variety of statistical (linear and nonlinear modelling, classical statistical tests, time-series analysis, classification, clustering, …) and graphical techniques, and is highly extensible.