PICO-8 - Lua-based fantasy console for making and playing tiny, computer games and programs.

Zazzy - Design and sell your own 3D printed jewelry

Photon - The fastest way to build beautiful Electron apps using simple HTML and CSS.

Beamable - Beamable provides an SDK that enables game makers to easily add social, commerce and content management features to their games with drag-and-drop prefabs inside Unity.

Back Market - the refurbished (super) market

Unity - The multiplatform game creation tools for everyone.