Show HN: An open-source manufacturing ERP/MES/QMS

Open-source ERP that runs inside your CMMC boundary The whole system of record — ERP, MRP, MES and QMS — on Postgres you own. On-prem, in your VPC, or fully air-gapped. Open source, so you can audit every line before it ever touches your most sensitive records. CMMC-compliant work stays inside your walls. Defense and aerospace manufacturers handling CUI can't ship their record of production to someone else's cloud. Self-hosting Carbon keeps that data inside your own CMMC boundary — and for Enterprise deployments we hand you the SSP, POA&M and SPRS inputs an assessor will ask for. Every site on one ledger you own. Run a single shop or a multi-national manufacturing engine from one Postgres database inside your perimeter. Per-entity currency, chart of accounts and tax; consolidated books; inter-site transfers — none of it leaving your network. Traceability that never leaves your network. Pull any serial number and get its full genealogy — material certs, operators, measurements, deviations — from a database that sits behind your own firewall. First article, NCR, CAPA and calibration on the same records as production. The floor, running on your servers. Digital travelers, operator terminals, barcode tracking and finite-capacity scheduling — all executing against the copy of Carbon you host. No cloud dependency between the floor and the record. One codebase, from a laptop to a cluster. The same source runs from a single Docker host to a multi-region deployment in your own cloud. No proprietary runtime, no lock-in. # Clone the source and bring up the whole stack git clone https://github.com/crbnos/carbon.git cd carbon docker compose up -d # App, API, MCP server and Postgres — all on your box. → Full deployment guides live in the documentation. Own the database, the models, and the files. Nothing held back for the cloud. Self-hosted Carbon is the same codebase that runs the managed cloud — the Community edition free under AGPL-3.0, Enterprise features unlocked with a commercial license. - ERP — quotes, orders, purchasing, inventory and job costing - MRP — demand, supply planning, BOM and routing versions - MES — digital travelers, operator terminal, live scheduling - QMS — first article, NCR/CAPA, calibration and genealogy - REST API and MCP server across every module (commercial license to self-host) - SSO / SAML, granular permissions and row-level security - Multi-entity, multi-location, consolidated accounting - ITAR-ready, CMMC and NIST 800-171 aligned deployment Read it. Run it. Extend it. The whole application is on GitHub — a typed TypeScript monorepo on Postgres. The Community edition is licensed AGPL-3.0 and free to self-host; Enterprise modules and air-gapped licensing require a commercial license. Audit it against your security requirements before a single record ever lands in it. Common questions. Is Carbon open source? Yes. The Community edition — the core ERP, MRP, MES and QMS — is on GitHub under AGPL-3.0 and free to self-host. A private fork is fine under AGPL-3.0. You need a commercial license to use Enterprise features, or to keep your changes private from the people who use your modified version (AGPL-3.0 requires you to offer them the source). Either way, every line is in the public repository, so you can audit it before you deploy. Does Carbon help with CMMC compliance? Yes. Self-hosting Carbon keeps your CUI inside your own boundary, which is the foundation of a CMMC and NIST 800-171 program. When you run Carbon on our bring-your-own-cloud (BYOC) infrastructure, we guarantee the deployment is audit-ready and provide the compliance artifacts an assessor asks for — a System Security Plan (SSP), a Plan of Action & Milestones (POA&M), and the SPRS score inputs — mapped to how Carbon runs in your cloud. Can Carbon run fully air-gapped? Yes, with an Enterprise license. Carbon runs on Docker against a Postgres database you control, and air-gapped licensing lets it run inside a restricted network with no outbound calls — built for classified and ITAR-restricted programs. Is the self-hosted version the same as the cloud? It is the same codebase. The managed cloud at app.carbon.ms is this repository, operated by us. Self-hosting gives you the same ERP, MRP, MES and QMS on infrastructure you own; the same REST API and MCP server need a commercial license when self-hosting, and other Enterprise features unlock with one too. Can I bring my own AI models? Yes. The whole backend is exposed over a REST API and a built-in MCP server, so you point your own agents — Claude, ChatGPT, a local model — at your own data. API keys and the MCP server are a Business feature, so self-hosting them needs a commercial license. Nothing leaves your perimeter unless you send it. Do you help with deployment? For regulated and enterprise programs we offer white-glove deployment, migration and an SLA. Talk to sales and we'll scope it with your team. Your factory. Your servers. Start from the source today, or have our team scope a deployment for your program. Company