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Open-source and self-hosted MRP

You want to run it yourself, own the data outright, and never receive a per-seat invoice again. That is a genuinely good trade for some shops and a genuinely bad one for others, and the deciding factor is almost never the feature list.

What to check before you choose

  • Read the actual license, not the marketing page. Open source, open core, source available and 'free tier' are four different things.
  • If it is open core, establish precisely which features are withheld from the free edition.
  • Who will run the server, apply updates and restore the backup at 2am? That person is the real cost.
  • How active is the project? Check commit dates and issue responses, not star counts.

Where people get this wrong

Reading 'free' as 'cheap'. The license costs nothing; the implementation costs plenty. It is still often cheaper over five years than per-seat SaaS, but that comparison only works if you are honest about the second number.

17 products fit

This list is derived from licensing and pricing fields, not hand-picked.

  • ERPNext

    A full open-source ERP with nothing held back for a paid edition, if you can carry the setup burden.

    Manufacturing ERPOpen sourcePasses all 6 Full MRP tests

    From $5/mo · $25/mo useful

    • Shops that want to own their system outright and never pay a per-seat bill again
    • Manufacturers who need accounting, purchasing and production in one place rather than three subscriptions
    • Teams with someone technical who can run a server or manage a hosting partner
    ✓ VerifiedChecked October 9, 2026

  • Odoo

    Formerly OpenERP, TinyERP

    An open-core ERP covering manufacturing, stock and accounting; read the Community versus Enterprise line carefully.

    Manufacturing ERPOpen corePasses all 6 Full MRP tests

    From $0/user/mo · $24.90/user/mo useful

    • Manufacturers who want production, stock, purchasing, ecommerce and the ledger from one vendor
    • Shops needing finite capacity scheduling and a real shop-floor tablet interface
    • Technical teams willing to self-host Community and avoid per-seat pricing entirely
    ✓ VerifiedChecked October 9, 2026

  • BlueSeer ERP

    Free MIT-licensed ERP with EDI, for shops that will install and look after it themselves.

    Manufacturing ERPOpen source

    Free plan; no published paid price

    • Small manufacturers with someone who can install and look after a Java desktop application
    • Shops that trade by EDI with larger customers and want it inside the ERP
    • Buyers who want a ledger, BOMs, routings and cell scheduling without a license fee
    ✓ VerifiedChecked October 9, 2026

  • Axelor Open Suite

    Open-source ERP with documented MRP; free to self-host, or €35 per user on Pro from 10 users.

    Manufacturing ERPOpen corePasses all 6 Full MRP tests

    Free plan · From €35/user/mo

    • Manufacturers who want open-source ERP with real MRP, capacity scheduling and accounting in one system
    • Teams with the technical staff to self-host Community, or ten or more users for Pro
    • European companies that care where their data is hosted
    ✓ VerifiedChecked October 9, 2026

  • Dolibarr

    The gentlest open-source ERP to start with, module by module.

    Light manufacturingOpen source

    Free plan; no published paid price

    • Small businesses that want to start with invoicing and stock and switch manufacturing on later
    • Shops that want accounting and production under one free license
    • Owners who find full ERPs overwhelming and want to enable one module at a time
    ✓ VerifiedChecked October 9, 2026

  • metasfresh

    Open-source ERP for food and wholesale, with unusually transparent cloud pricing.

    Manufacturing ERPOpen source

    From €99/mo · €398/mo useful

    • European wholesale and food businesses wanting an open-source ERP with a commercial cloud option
    • Teams that want the option to move between self-hosting and vendor hosting without changing product
    • Buyers who prefer a published price to a quote, even in a category where quotes are the norm
    ✓ VerifiedChecked October 9, 2026

  • Tryton

    Foundation-governed open-source ERP with no commercial edition to upsell you.

    Manufacturing ERPOpen source

    Free plan; no published paid price

    • Teams who want open-source ERP with no company able to change the license or paywall a module
    • Shops that prefer a smaller, more coherent module set to a sprawling suite
    • European businesses valuing foundation governance under Belgian law
    ✓ VerifiedChecked October 9, 2026

  • webERP

    Self-hosters who want free, documented MRP and a real ledger, and can live without capacity planning.

    Manufacturing ERPOpen sourcePasses all 6 Full MRP tests

    Free plan; no published paid price

    • Small manufacturers who can self-host and want real MRP without a license fee
    • Businesses that want accounting, inventory and manufacturing in one open-source system
    • Shops that need lot or serial control with test results and certificates of analysis
    ✓ VerifiedChecked October 9, 2026

  • Apache OFBiz

    Real MRP under an Apache license, for teams with developers to spare.

    Manufacturing ERPOpen source

    Free plan; no published paid price

    • Organizations with in-house Java developers who want to own the whole stack
    • Teams that need a permissive Apache license with a patent grant for commercial reasons
    • Long-horizon projects where a decade of no license fees justifies a heavy build
    ✓ VerifiedChecked October 9, 2026

  • Orkyo

    Beta

    Scheduling only, and refreshingly honest about that.

    Planning / APSOpen core

    Free plan · From €0/mo

    • Teams currently coordinating shared machines and people through spreadsheets and email
    • Shops running multiple sites that need one view of who and what is booked
    • Anyone wanting a free self-hosted scheduling layer alongside an existing system
    ✓ VerifiedChecked October 9, 2026

  • frePPLe

    The planning brain you bolt onto an ERP that cannot plan.

    Planning / APSOpen corePasses all 6 Full MRP tests

    Free plan · From €546/mo

    • Shops that already run an ERP or inventory system and have outgrown its planning
    • Odoo users who want serious constrained planning without changing their transactional system
    • Planners who need what-if scenarios and finite-capacity plans rather than another place to type orders
    ✓ VerifiedChecked October 9, 2026

  • InvenTree

    Excellent free parts-and-BOM control for hardware shops, not a planning engine.

    BOM & inventoryOpen source

    Free plan; no published paid price

    • Electronics and hardware shops that need rigorous part, stock-location and BOM control
    • Technical owners who want an MIT license and a real REST API with no vendor in the middle
    • Labs and prototype shops tracking serialized units and test results
    ✓ VerifiedChecked October 9, 2026

  • Craftplan

    Small food and craft producers comfortable running Docker who want batches, lots and costing for free.

    Light manufacturingOpen source

    Free plan; no published paid price

    • Bakeries and small food producers who make to order and want allergens, nutrition labels, lots and batch costs in one place
    • Makers who can run a Docker server and would rather own their data than pay a subscription
    • Small producers who need a supplier-to-customer recall trace without paying for traceability
    Partially verifiedChecked October 9, 2026

  • Part-DB

    The simplest free way to know what components you have and where.

    BOM & inventoryOpen source

    Free plan; no published paid price

    • Hobbyists and small electronics shops who mainly need to find the part they already own
    • Anyone wanting a free, Docker-installable component catalog with datasheets attached
    • Teams that want an API over their parts list without paying for one
    Partially verifiedChecked October 9, 2026

  • ADempiere with Libero Manufacturing

    Technical teams willing to self-host and support a community ERP with a real MRP engine in its code.

    Manufacturing ERPOpen source

    Free plan; no published paid price

    • Technical teams that want a free, self-hosted ERP with an MRP engine
    • Integrators who already support ADempiere or its Libero manufacturing module
    Partially verifiedChecked October 9, 2026

  • iDempiere

    Heavyweight community ERP with no license fee and a long lineage.

    Manufacturing ERPOpen source

    Free plan; no published paid price

    • Larger organizations with development capacity that want an ERP with no per-seat cost at all
    • Teams valuing community governance over a single vendor's roadmap
    • Businesses already familiar with the Compiere and ADempiere lineage
    Partially verifiedChecked September 18, 2026

  • ERP5

    A highly customisable open-source framework for organizations that will fund an implementation.

    Manufacturing ERPOpen source

    Free plan; no published paid price

    • Organizations that want one open-source platform shaped to unusual processes and will fund Nexedi or trained developers to do it
    Partially verifiedChecked October 9, 2026