Thunkable - Powerful but easy to use, drag-and-drop mobile app builder.
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
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.
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Bubble.io - Building tech is slow and expensive. Bubble is the most powerful no-code platform for creating digital products.
LightShot - The fastest way to take a customizable screenshot.