Carbon is an open-source, self-hosted manufacturing platform that combines ERP, MRP, MES and QMS into a single Postgres-backed system designed to keep controlled unclassified information (CUI) inside a customer-controlled perimeter. It’s aimed at regulated and defense manufacturers with CMMC and NIST 800-171 alignment, offering on-prem, VPC/BYOC or fully air-gapped deployment options. The Community edition is available under AGPL-3.0 so every line can be audited before deployment; Enterprise features (air-gapped licensing, certain API/MCP capabilities and commercial support) require a paid license and unlock white-glove deployment, migration and SLA-backed services.
Feature-wise, Carbon runs a single Postgres schema with row-level security and stores files in customer-owned object storage. Core functions include quotes/orders/purchasing/inventory/job costing (ERP), demand and supply planning with BOM and routing versions (MRP), digital travelers, operator terminals, barcode/QR tracking and finite-capacity scheduling (MES), plus first article inspection, NCR→CAPA workflows, calibration and full serial/lot genealogy (QMS). It supports multi-entity, multi-location ledgers, consolidated books and intercompany transactions, SSO/SAML and a REST API/MCP server for integrations and private LLM agents. The same codebase powers both single-box Docker installs and multi-region enterprise deployments.
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