GnuPlot - Gnuplot is a portable command-line driven interactive data and function plotting utility.
Microsoft Visual Studio - Microsoft Visual Studio is an integrated development environment (IDE) from Microsoft.
GeoGebra - GeoGebra is free and multi-platform dynamic mathematics software for learning and teaching.
IntelliJ IDEA - Capable and Ergonomic IDE for JVM
SciDaVis - SciDAVis is a free application for Scientific Data Analysis and Visualization.
Xcode - Xcode is Apple’s powerful integrated development environment for creating great apps for Mac, iPhone, and iPad. Xcode 4 includes the Xcode IDE, instruments, iOS Simulator, and the latest Mac OS X and iOS SDKs.