Thunkable - Powerful but easy to use, drag-and-drop mobile app builder.
GeneXus - Web & Mobile application development platform
Bubble.io - Building tech is slow and expensive. Bubble is the most powerful no-code platform for creating digital products.
B4J - 100% free development tool for cross platform desktop and server apps.
BuildFire - BuildFire is the easiest way for small businesses to build a mobile app in a matter of minutes for iOS and Android.
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.