Dark Language - Holistic language, editor, and infra for building backends
Thunkable - Powerful but easy to use, drag-and-drop mobile app builder.
adapta-gtk-theme - An adaptive Gtk+ theme based on Material Design Guidelines - adapta-project/adapta-gtk-theme
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.
Arc Games - Arc brings your favorite games, communities, media and
Bubble.io - Building tech is slow and expensive. Bubble is the most powerful no-code platform for creating digital products.