Python - Python is a clear and powerful object-oriented programming language, comparable to Perl, Ruby, Scheme, or Java.
Microsoft Visual Studio - Microsoft Visual Studio is an integrated development environment (IDE) from Microsoft.
OpenXava - OpenXava is a Web Java Framework for Rapid Development of Enterprise Applications.
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.
Microsoft PowerApps - Microsoft PowerApps provides tools to create, customize, share and run apps.
Visual Studio Code - Build and debug modern web and cloud applications, by Microsoft