This is a web app for generating production and ship technology sheets for printing, for the game Space Empires: 4X by GMT Games. You can choose which optional rules you want to play with and it will only show the relevant items/technologies etc. It supports all options from the base game and the Close Encounters and Replicators expansions.
It should work with both A4 and Letter formats in landscape mode. It has not been tested with other paper formats.
If you find any bugs, or have ideas for how to improve it, please report it as an issue here on GitHub
The app is a single self-contained HTML file with no dependencies. You can save it to your computer and run it locally.