Sheetwright for GGA

Alpha 0.4.8. Build and edit GURPS characters on the GURPS Game Aid sheet, live — powered by the rules engine of GURPS Character Sheet (GCS) by Richard A. Wilkes, running in your browser.

Edit on the sheet you know. Change points or an attribute on the GGA sheet and every level, default and point total is worked out the way desktop GCS does it.
"+" searches your GCS libraries as you type, forgives misspellings ("cmbt reflx" finds Combat Reflexes), and prices anything a library lacks from a short custom form.
Locked numbers explain themselves: hover a skill level or cost for the engine's breakdown with page references.
Adopt this character brings in a sheet typed by hand or imported from GCA; the builder window shows your libraries and the whole character side by side.
Download a .gcs any time; snapshots let you undo.

Manual · What's new / changelog

Install

In Foundry: Add-on Modules → Install Module
Paste this into the Manifest URL field at the bottom:

https://omegavtt.com/foundry/sheetwright-gga/module.json

Click Install, enable it with libWrapper in your world, then add your GCS libraries (Sheetwright menu → Libraries).

Requires Foundry v13/14, GURPS Game Aid v0.18.18+ and libWrapper. It ships no game data: your GM loads the free GCS Master Library or your own GCS library files. The engine (about 9 MB) downloads once per browser on first use.

This is an alpha: keep backups of characters you care about (Download .gcs) and report problems with the output of Sheetwright.diagnose() from the browser console.

Direct zip download for manual installs (extract into Data/modules/ so it becomes Data/modules/sheetwright-gga/). Manual installs get no update button.

Source: sheetwright-gga · engine gcs-engine (GCS v5.51, Mozilla Public License 2.0). Not affiliated with Steve Jackson Games; GURPS is a trademark of Steve Jackson Games.