Thunkable - Powerful but easy to use, drag-and-drop mobile app builder.
TestRail - TestRail provides comprehensive test case management for software testing. Organize your testing, boost productivity, get real-time insights, and track progress toward milestones. Integrates with leading issue tracking and test automation tools.
BuildFire - BuildFire is the easiest way for small businesses to build a mobile app in a matter of minutes for iOS and Android.
LambdaTest - Perform Web Testing on 2000+ Browsers & OS
MIT App Inventor - App Inventor is a cloud-based tool, which means you can create apps for phones or tablets right in your web browser.
PractiTest - PractiTest is a cloud based Innovative test management tool.