Open-source ERP for manufacturing compared

Before comparing products, a manufacturer should be clear about what the ERP has to hold: a bill of materials that defines each assembly and its components, routings that sequence the operations and work centers each part passes through, and MRP logic that turns demand into planned orders against current stock and open purchase orders. Shop floor tracking adds the question of whether operators can report completed operations, scrap and labor against those routings in near real time. The supplied facts confirm that Tryton's integrated modules include manufacturing with bills of materials and routings, alongside inventory and stock and supply chain. Odoo and ERPNext both list manufacturing among the areas they cover, and ERPNext's own description names manufacturing alongside accounting and inventory. Those listings establish scope, not depth.

Depth is where the three can differ in practice, and the supplied facts do not settle it. Whether a platform supports multi-level BOMs with phantom sub-assemblies, alternate routings, work center capacity scheduling, finite versus infinite capacity planning, or shop floor data capture on tablets is a question for a demo, not a feature list. Ask each vendor, or the certified partner you would use, to build one of your own multi-level products with its real routings, then run an MRP calculation against your current stock, open orders and lead times. Check how the system handles a routing change mid-order, a substituted component and a partial scrap report. Confirm which of these functions sit in the Community or open-source editions and which need a paid Odoo Enterprise subscription, since the editions page lists PLM and Quality as Enterprise-only.

Plan the integration work before you choose. Manufacturing usually means connecting the ERP to machine data, a quality or MES system, label printers and CAD or PLM tools, and each connection needs an owner, a test plan and a support path after go-live. Treat the demo as the start of a proof of concept: export a sample of your BOMs and routings through the platform's import path, and note the record volumes and error handling involved. ERPNext's Data Import tool is documented for importing only a few thousand records at a time, which matters for large parts catalogs. Put the results in the written scope so that the quote reflects the routings and integrations you actually run.

Odoo's support clock is the first thing to plan around. Standard support covers three years after a major release, and security updates arrive only during that window. Odoo 20 was released in September 2026 with standard support planned until September 2029, while Odoo 17.0 standard support ended in September 2026. On-premise Odoo upgrades also require an Enterprise subscription, and the Community edition has no access to the upgrade service. For a manufacturing plant running Community with custom MRP or shop floor code, that means your team, or a partner you pay, owns each upgrade path, testing and security patching after the window closes. Ask the vendor to confirm which Enterprise features your manufacturing processes depend on before you choose the edition.

ERPNext's effort depends on staying on a listed version line. The v15 line is planned for support until the end of 2027 and v16 until the end of 2029, and v14 reached end of life on January 31, 2026. Both supported lines receive frequent minor releases, so your team needs a routine for applying them. Frappe's support policy ties warranty coverage to running a listed version and holding a matching Frappe Cloud support plan, so a self-hosted plant without that plan carries the patching and troubleshooting itself. Server Scripts, which are disabled by default from version 15, are a common place where manufacturing customizations break during upgrades, so inventory them before any version change.

Tryton shifts the work toward a faster cadence with longer anchors. Each series is supported for one year, releases come every six months, and each new major series gets five years of long-term support. Choosing an LTS series lets a plant defer most upgrades, but the team still has to track the six-month cycle and confirm which series its production database runs. Across all three options, upgrade cost is driven by the number of custom modules, the volume of production history such as work orders and stock moves, and the time needed to build and test an upgraded copy of the database before go-live. In any quote, ask for the scope of that test database work, the handling of custom code, a rollback plan, and who carries security patching between versions.

Patch ownership is the first decision, and it differs by platform. Odoo provides security updates only during standard support, so a self-hosted Odoo version that has left standard support stops receiving security fixes unless you pay for extended support, which Odoo limits to on-premise and selected Odoo.sh versions. Plan an upgrade path before the support end date rather than treating it as a later task. Tryton's security releases of October 5, 2026, covering issue 15032 (unescaped HTML editor content) and issue 15035 (report names that could execute commands on the server), show why you need a fixed subscription to its release announcements and a test environment that can take a patch within days. Confirm with each vendor how security advisories are published, how quickly fixes arrive for your exact version, and whether you receive them as a customer or only as a public release.

ERPNext has a different hardening surface. From version 15, Server Scripts are disabled by default and must be enabled through the server_script_enabled setting, so whoever owns the platform should record who turned them on, why, and which custom Python runs on document events or as API endpoints. Keep that list as part of your change control. On the access side, set role-based permissions per module before go-live, and decide whether users sign in through LDAP using the ERPNext LDAP integration guide or through social login as described in the Frappe Social Login Key guide. Odoo has a matching LDAP option in its own documentation, so the directory design should be decided once for all three platforms.

Before you select any of these platforms, ask each vendor or implementation partner to confirm four things in writing: the patch process and advisory channel, the support window for the exact version you plan to run, the hardening baseline they expect for the database, cache and worker services, and who applies and tests patches in your environment. Budget for patch testing in every quarter, since each platform's fixes arrive on its own schedule. Those answers determine how much of this work falls to your team and how much is a recurring service.