webERP
by webERP community (project led by Tim Schofield)
Manufacturing ERPPasses all 6 Full MRP testsOpen source✓ Verified
An open-source, browser-based accounting and ERP system in PHP, with a double-entry ledger, inventory with lot and serial control, work orders, quality testing and a regenerative MRP that plans level by level and dates orders by lead time. Self-hosted under GPL v2; there is no vendor-run service.
Why it is classified this way
We call this a Manufacturing ERP product. A broad business system (accounting, sales, purchasing) with a substantial manufacturing or planning module attached.
This product meets our Full MRP tests, but we classify it by its center of gravity rather than its planning engine alone. The capability table below shows the detail.
The six Full MRP tests, and how webERP does on each (6 of 6)
- YesIt represents a bill of materials, recipe, or formula.Evidence: weberp.org › Features(opens in a new tab)
- YesIt accepts dated demand, sales orders, a forecast, or a master production schedule.Evidence: github.com › ManualMRP(opens in a new tab)
- YesIt nets that demand against stock on hand and orders already incoming.Evidence: github.com › ManualMRP(opens in a new tab)
- YesIt explodes requirements through at least one level of the bill of materials.Evidence: github.com › ManualMRP(opens in a new tab)"If that part has parts below it in the bom structure, MRP also creates an mrprequirements record for the lower level parts based on the net requirement for the top level part times the quantity per assembly for the component, with a schedule date based on the lead time for the part."
- YesIt uses lead times or required dates.Evidence: github.com › ManualMRP(opens in a new tab)
- YesIt produces dated buy, make, transfer, release, or reschedule recommendations.Evidence: github.com › ManualMRP(opens in a new tab); github.com › ManualManufacturing(opens in a new tab)
These rules are applied identically to every product and enforced at build time, a record cannot be published as Full MRP unless all six pass with a source attached. Read the methodology.
Best for
- 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
Not a fit when
- Anyone who needs capacity planning or scheduling: the project says it is not available
- Buyers who want a hosted service with vendor support
- Shopify or marketplace sellers who need a ready-made store connector
Pricing facts
What it costs to do manufacturing in this product.
Free to self-host
Free software under GPL v2. You install, host, back up and upgrade it yourself; there is no vendor-run hosting.
Free to self-host
$0/month
No published price
This vendor does not publish pricing, so you cannot compare it against anything here without contacting them. We will not estimate a figure.
What moves the real bill
- No published price. You have to contact the vendor, which usually means a sales call.
Plans
| Plan | Price | Add-ons and setup |
|---|---|---|
| Self-hostedwebERP (GPL-2.0) | Free | — |
| You install, host, back up and upgrade it yourself. | ||
Pricing detail
There is no license fee and no commercial edition. The project publishes releases on GitHub (v5.0.1, 2026-01-01, for PHP 8) and runs a public demo that resets hourly. Hosting, setup and support are whatever you arrange yourself.
Checked on September 19, 2026. Source: github.com(opens in a new tab). Prices change. Check before you buy.
Manufacturing capability
20 of 25 fields resolved. "Unknown" means we have not found first-party evidence. It is not a No.
Planning
Working out what to buy or make, and when.
| Capability | Finding | What we found |
|---|---|---|
| Accepts dated demandYou can tell it what is due and when, sales orders with dates, a forecast, or a production schedule. | Yes | MRP takes "open sales orders, worequirements records for open work orders, parts below their reorder levels, and demands entered in the mrpdemands table"; a master schedule demand has a "part number, quantity, and due date".Reviewed October 9, 2026. Source: github.com › ManualMRP(opens in a new tab)Question this |
| Nets against stock on handIt subtracts what you already have before telling you to buy more. | Yes | "MRP subtracts all demands from the supplies for each part", with supply built from "the current quantity on hand, open purchase orders, and work orders".Reviewed October 9, 2026. Source: github.com › ManualMRP(opens in a new tab)Question this |
| Counts incoming ordersIt knows about purchase orders and production orders already placed, so it does not tell you to order twice. | Yes | "An mrpsupplies table is created based on the current quantity on hand, open purchase orders, and work orders."Reviewed October 9, 2026. Source: github.com › ManualMRP(opens in a new tab)Question this |
| Uses lead timesIt works backwards from when you need something to when you must order or start it, using supplier and production lead times. | Yes | "Lead Time can be entered. MRP uses this in scheduling recommended orders", working from "a part's need (required) date minus its lead time" against a production calendar.Reviewed October 9, 2026. Source: github.com › ManualMRP(opens in a new tab)Question this |
| Produces dated buy/make suggestionsThe output is an actionable list with dates, order this much by this date, start this batch on this date. | Yes | "MRP Suggested Purchase Orders and MRP Suggested Work Orders show the orders that MRP has determined should be created", and "MRP Reschedules Required" lists orders whose due dates need moving. MRP does not create the orders itself.Reviewed October 9, 2026. Source: github.com › ManualMRP(opens in a new tab); github.com › ManualManufacturing(opens in a new tab)Question this |
| Capacity planningChecks whether your people and machines can do the work in the time available. | No | The features page states "capacity requirements planning and MRP II functionality is NOT currently available in webERP".Reviewed October 9, 2026. Source: weberp.org › Features(opens in a new tab)Question this |
Production
Recipes, bills of materials, and running the work.
| Capability | Finding | What we found |
|---|---|---|
| Bill of materialsA list of the parts and quantities needed to make one of something. | Yes | "Multi-level bill of materials - with error trapping to prevent recursive BOMs."Reviewed October 9, 2026. Source: weberp.org › Features(opens in a new tab)Question this |
| Multi-level BOMSub-assemblies inside assemblies, a part that is itself made from other parts, nested as deep as you need. | Yes | Multi-level BOMs, and phantom bills that "automatically explode into components when a parent work order is created". MRP assigns each part a level from the BOM structure.Reviewed October 9, 2026. Source: weberp.org › Features(opens in a new tab); github.com › ManualMRP(opens in a new tab)Question this |
| Recipes & formulasBatch-style production by weight, volume, or percentage, including scaling a batch up or down. | Unknown | Not yet researched. We would need: documentation of recipe or formula records, ideally with batch scaling.Know the answer? |
| Work / manufacturing ordersA record authorising and tracking the making of a specific quantity. | Yes | "Issues to works orders and receipts of finished goods from work orders integrated to inventory and GL", with optional backflushing and multiple outputs for by-products.Reviewed October 9, 2026. Source: weberp.org › Features(opens in a new tab)Question this |
| Routings & operationsThe ordered steps a product goes through, and which machine or station does each one. | Partial | Work centers are maintained, with a location and an overhead account, and labour can be issued to work orders. The manual describes no sequence of operations per item.Reviewed October 9, 2026. Source: github.com › ManualManufacturing(opens in a new tab)Question this |
| Shop-floor trackingOperators report progress, time, and completions as the work happens. | Unknown | Not yet researched. We would need: documentation of a shop-floor, operator, or terminal interface for reporting production.Know the answer? |
| Quality controlsChecks, tests, holds, and non-conformance records tied to production or receiving. | Yes | The Quality module captures "actual test results on a Lot to Lot or Serial number basis" and produces product specifications and certificates of analysis; QA samples can be logged automatically on purchase and work order receipts.Reviewed October 9, 2026. Source: github.com › ManualQualityAssurance(opens in a new tab)Question this |
Inventory & traceability
Knowing what you hold and being able to trace it.
| Capability | Finding | What we found |
|---|---|---|
| Batch & lot traceabilityWhich incoming material lots went into which finished batch, and where those finished goods went. | Yes | "A history of stock movements is maintained by stock item allowing full traceability including serialised and lot/batch numbered stock items", and controlled items reference "each stock movement to the bundles/batch references".Reviewed October 9, 2026. Source: weberp.org › Features(opens in a new tab)Question this |
| Expiry & shelf lifeBest-before dates on materials and finished goods, with warnings before they lapse. | Unknown | Not yet researched. We would need: documentation of expiry, best-before, or shelf-life date fields.Know the answer? |
| Serial numbersUnique identifiers on individual units, for warranty or field service. | Yes | "Serialised is a special case of controlled where the batch size is always one"; stock records are kept for each serial number.Reviewed October 9, 2026. Source: github.com › ManualInventory(opens in a new tab)Question this |
Commerce & accounting
Costs, purchasing, storefronts, and the books.
| Capability | Finding | What we found |
|---|---|---|
| Product costing & COGSWhat it costs you to make one, and the cost of the goods you sold. | Yes | Standard or weighted average costing, "Automatic cost rolls ups on change of BOM or component costs" and work order costing with usage variances posted to the ledger.Reviewed October 9, 2026. Source: weberp.org › Features(opens in a new tab)Question this |
| PurchasingRaising and tracking purchase orders to suppliers from inside the system. | Yes | Purchase orders with approval levels; "Receiving inventory against purchase orders creates journals in the general ledger".Reviewed October 9, 2026. Source: weberp.org › Features(opens in a new tab)Question this |
| Accounting connectionSends financial data to bookkeeping software, or includes its own general ledger. | Yes | A built-in general ledger with automatic posting, budgets, balance sheet and profit and loss.Reviewed October 9, 2026. Source: weberp.org › Features(opens in a new tab)Question this |
| Ecommerce connectionPulls orders and pushes stock levels to a storefront or marketplace. | Partial | The project maintains webSHOP, "an add-on eCommerce portal". No connector to Shopify, Amazon or similar marketplaces is described.Reviewed October 9, 2026. Source: weberp.org(opens in a new tab)Question this |
Openness & your data
Getting data in, out, and away if you leave.
| Capability | Finding | What we found |
|---|---|---|
| APIA documented programming interface so other software can read and write your data. | Yes | "webERP comes with a simple to use and flexible API" over XML-RPC, for posting transactions and extracting data.Reviewed October 9, 2026. Source: github.com › ManualAPITutorial(opens in a new tab)Question this |
| WebhooksThe system can notify other software the moment something changes. | Unknown | Not yet researched. We would need: documentation of outbound webhooks or event subscriptions.Know the answer? |
| MCP supportA Model Context Protocol server, letting an AI assistant read or act on this data. Useful, but it has nothing to do with whether the product plans materials. | Unknown | Not yet researched. We would need: a first-party mcp server, or documentation of one.Know the answer? |
| CSV exportYou can get your lists out as spreadsheet files. | Yes | "Flexible user definable sales analysis reports to pdf or spreadsheet (csv comma separated values)."Reviewed October 9, 2026. Source: weberp.org › Features(opens in a new tab)Question this |
| Full data exportYou can take everything, including history and relationships, not just a few screens' worth of rows. | Partial | You run the database yourself, so all of it is yours, but no export or backup feature is documented on the pages read.Reviewed October 9, 2026. Source: weberp.org(opens in a new tab)Question this |
Deployment, licensing and your data
- Deployment
- Self-hosted
- Licensing
- Open sourceGPL-2.0
- Team sizes
- 2–5 people, 6–20 people, 21–50 people
- Manufacturing styles
- Countable assembled products, Custom or job-shop work
About the licence
GNU General Public License version 2, read from doc/LICENSE.txt at the v5.0.1 tag. The homepage says "100% Free & Open Source — GNU Public License v2. No licensing fees, no hidden costs."
Licence: github.com(opens in a new tab)
Integrations
- webSHOP (the project's own ecommerce add-on)
- CounterLogicPOS
Industries
Jobs this product qualifies for
Derived from the capability table above, not hand-assigned.
Editorial notes and cautions
Things we would want a friend to know before buying.
- MRP suggests purchase and work orders and reschedules, but does not create them; someone turns the suggestions into orders.
- The manual cited is the one in the repository at the v5.0.1 release. The website's PDF manual is for 4.15.2.
Evidence and verification
✓ VerifiedLast checked October 9, 2026 · 80% of capability fields resolved · 100% of those carry a source
Researched 2026-09-19 from weberp.org, the features page and the user manual in the repository at the v5.0.1 tag (released 2026-01-01; the repository was last pushed 2026-09-18). Quotes read from the manual HTML, not a summary.
Sources we checked (6)
What we still want to confirm
We publish our gaps rather than hiding them. If you can point us at a first-party page for any of these, we will update the record and credit the correction.
- Check the new forecasting module (announced 2026-03-19) once it is in a release.
- Check expiry dates on lots, recipe or formula handling, and shop-floor reporting.
- Check whether webSHOP or any third-party module connects to Shopify or WooCommerce.
Still unknown: recipes & formulas, shop-floor tracking, expiry & shelf life, webhooks, mcp support.