Dropzone - If you want your file uploads to work even without JavaScript, you can include an element with the class fallback that dropzone will remove if the browser is supported.
Thunkable - Powerful but easy to use, drag-and-drop mobile app builder.
Dropover - Mac app for easier drag & drop
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.
Unclutter - Unclutter is an app that is designed to help Mac users bring order to their desktop. Among other features, this powerful piece of software provides quick access to a user's notepad and clipboard.
Bubble.io - Building tech is slow and expensive. Bubble is the most powerful no-code platform for creating digital products.