GoodBarber - GoodBarber is a mobile app creation platform.
Python - Python is a clear and powerful object-oriented programming language, comparable to Perl, Ruby, Scheme, or Java.
Fuse - Fuse is a UX tool suite for mobile app designers and developers.
OpenXava - OpenXava is a Web Java Framework for Rapid Development of Enterprise Applications.
Dropsource - Mobile development platform for building native iOS & Android apps
Microsoft PowerApps - Microsoft PowerApps provides tools to create, customize, share and run apps.