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Open QuarterMaster vs Part-DB: catalog facts
Open QuarterMaster	Part-DB
Free Free and open source under the GPL-3.0 licence.	Free Free and open source under the AGPL-3.0.
Web, Self-hosted	Web, Self-hosted
Modular design with a core API and optional plugins Aimed at home use as well as business-scale inventory	Barcode labels and webcam scanning KiCad BOM import and project stock checks
Still in active development, so features are changing Smaller project with a modest community	Needs a web server and database to run Public demo runs development builds
Self-hosted	Self-hosted
Open source	Open source
License: GPL-3.0	License: AGPL-3.0
Not stated if an account is needed	Account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.