Open Source Barware is a free, GPLv3 bar inventory system for bars and restaurants. It runs locally on your laptop with no subscription, no account, and no cloud lock-in. Built for real bar workflows: voice or walk-based counting, tenths, scale-ready precision, variance by bottle/station/shift/category, POS imports, smart orders, receiving, par alerts, barcode scanning, recipe costing, mobile counting, and multi-venue support. Optional AI is only for invoice photos.