Thunkable - Powerful but easy to use, drag-and-drop mobile app builder.
SVG Artista - Little tool that helps you create SVG animations
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.
SVG Backgrounds - Customize, scalable backgrounds and patterns for free
Bubble.io - Building tech is slow and expensive. Bubble is the most powerful no-code platform for creating digital products.
Get waves - A simple web app to generate svg waves, unique every time