SpoolEase is a free, source-available (Apache 2.0 + Commons Clause), fully local filament manager for Bambu Lab printers, built around a DIY ESP32 NFC console (an optional load-cell scale adds real measured weight). It's a clever, offline-first build for solder-capable Bambu owners, and it's a very new (2025), single-developer project.
SimplyPrint is a brand-agnostic filament manager with nothing to build: it reads the G-code of every print and deducts filament automatically, on any printer you already own, with no console, no scale and no soldering. It adds native NFC read/write from your phone, browser or a USB reader, Bambu and Creality AMS auto-import, direct Dymo and Zebra label printing, the open Open Filament Database (143 brands and growing), and a whole platform around it, and the filament manager is free on every plan. It's also a company-backed product that's been running print operations since 2020. If you want local, scale-accurate, Bambu-deep tracking and enjoy building hardware, that's SpoolEase; if you want tracking that just happens across any printer brand with nothing to solder, that's SimplyPrint.