GeneXus - Web & Mobile application development platform
Neptune Software MXDP - Neptune Software MXDP is a development utility that allows developers to develop applications for the new digital touchpoints and platform and simultaneously maintaining an extensive user experience.
B4J - 100% free development tool for cross platform desktop and server apps.
NotePlan - Make plans inside an individual markdown note for every day in your calendar. Use it as a journal for your daily tasks and plan todos in advance. For Mac, iPhone and iPad.
Mendix MXDP - Mendix MXDP is a comprehensive platform for multi-experience development, providing all the needs related to innovation, centralizing, and application consolidation.
Xojo - Real Software and Real Studio are now Xojo.