Blitz.js - Rails-like framework for React apps, built on Next.js
Thunkable - Powerful but easy to use, drag-and-drop mobile app builder.
Domainz.io - Premium domains, for not so premium prices
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.
Refine - A React Framework for building internal tools, admin panels, dashboards & B2B apps with unmatched flexibilty.
Bubble.io - Building tech is slow and expensive. Bubble is the most powerful no-code platform for creating digital products.