A web app that helps you with the spread-sheets in GMT's Space Empires 4X board game.
https://www.gmtgames.com/p-979-space-empires-5th-printing.aspx
It offers an automated Production table and interactive Technology and Ship tables.
It's designed for mouse control, so that you only need a small bluetooth mouse on your gaming table and a line of sight to your monitor or tablet.
The app is presented as a single HTML file for easier portability and offline-play.
License: Creative Commons 4.0 CC-BY-NC
https://gamesbyfelix.com