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ERP · head to head

ADempiere vs Plex Manufacturing Cloud

ADempiere logo

ADempiere

ERP

Community-run open source ERP forked from Compiere, with no vendor behind it

From
Free
Rated
-
Full reviewWebsite
P

Plex Manufacturing Cloud

ERP

Multi-tenant manufacturing ERP with MES built in, owned by Rockwell Automation

From
$500/month
Rated
-
Full reviewWebsite

The short version

  • Only ADempiere has a free tier, so it costs nothing to try first.
  • Each has a real cost: ADempiere there is no company behind it, so there is no support contract to buy, no SLA, no escalation path and no roadmap commitment; if your implementation partner leaves the market you own the problem entirely.; Plex Manufacturing Cloud there is no on premise option, so a plant whose line-side terminals must keep working through a network outage needs a mitigation plan, and connectivity becomes a production dependency rather than an IT concern.
  • They diverge on capability: ADempiere covers Application dictionary, Plex Manufacturing Cloud covers Built-in MES.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which ADempiere and Plex Manufacturing Cloud actually diverge.

Attributes where ADempiere and Plex Manufacturing Cloud differ
AttributeADempierePlex Manufacturing Cloud
Starting priceFree$500/month
Pricing modelOpen source, no licence feesubscription
Free tierYesNo
PlatformsWeb, Windows, macOS, Linux, Self-hostedCloud, Mobile, Web
FoundedUnknown1995

Identical on both: user rating (Not yet rated), category (ERP).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in ADempiere

  • Application dictionary
  • Financial accounting
  • Order to cash and procure to pay
  • Manufacturing
  • Point of sale
  • Workflow engine
  • Java and PostgreSQL stack
  • gRPC and REST services

Only in Plex Manufacturing Cloud

  • Built-in MES
  • Quality management
  • Lot and serial traceability
  • Production scheduling
  • Supply chain and EDI
  • Financials
  • Single version delivery

Both cover

  • Inventory and warehouse

What people use each for

The jobs each tool is most often brought in to do.

ADempiere

  • A manufacturer in Latin America with an existing ADempiere consulting partner that needs localised tax and accounting behaviour a global vendor will not buildnot Plex Manufacturing Cloud
  • A company that wants to modify ERP screens and document workflows without a vendor change request, using the application dictionary rather than codenot Plex Manufacturing Cloud
  • An organisation with a hard requirement to keep financial data on its own servers under its own control with no cloud dependencynot Plex Manufacturing Cloud
  • A systems integrator building a vertical ERP product on a permissive base it can fork and ship without paying a licence feenot Plex Manufacturing Cloud

Plex Manufacturing Cloud

  • An automotive component supplier that must hold complete traceability and pass customer quality auditsnot ADempiere
  • A manufacturer replacing a separate ERP and MES pair that never reconcile with each othernot ADempiere
  • A multi-plant discrete manufacturer that wants one system of record across sites rather than one per plantnot ADempiere
  • An organisation that has repeatedly deferred an ERP upgrade and wants the upgrade problem removed from its futurenot ADempiere

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

ADempiere

  • There is no company behind it, so there is no support contract to buy, no SLA, no escalation path and no roadmap commitment; if your implementation partner leaves the market you own the problem entirely.
  • The official website adempiere.net does not resolve, which strands most of the historic documentation and tutorials that search engines still point at and makes onboarding a new developer considerably harder.
  • The last conventional stable release, 3.9.4, is from January 2023, so despite ongoing GitHub activity a buyer evaluating on release cadence sees a project moving slowly.
  • iDempiere, a later fork of the same codebase, absorbed much of the developer community, so ADempiere competes for contributors with its own descendant and is the smaller of the two ecosystems.
  • The interface and the Java Swing heritage feel dated, and staff coming from a modern cloud ERP will need training and will complain; expect resistance from finance and warehouse users during rollout.

Plex Manufacturing Cloud

  • There is no on premise option, so a plant whose line-side terminals must keep working through a network outage needs a mitigation plan, and connectivity becomes a production dependency rather than an IT concern.
  • Every customer runs the same version on the vendor's schedule, so you cannot defer a release to fit around a plant shutdown or a customer audit and must absorb regression testing on the vendor's cadence.
  • Customisation is limited to the platform's own configuration and extension tools, which is what makes the single version model possible but means a process you cannot express within those tools has to change rather than be accommodated.
  • The financial modules are less developed than the operational ones, so groups with complex multi-entity consolidation, statutory reporting in several countries or sophisticated planning requirements often keep a separate finance system alongside it.
  • Country localisations and language coverage are narrower than the tier one vendors offer, which limits the product for a manufacturer expanding into markets with demanding local tax and reporting rules.

Pricing, plan by plan

ADempiere

Free
  • Community editionFree
    • GPL v2 licensed, no licence fee
    • Full ERP, CRM, supply chain and POS modules
    • Self-hosted on your own infrastructure

Plex Manufacturing Cloud

$500/month
  • Standard$500/month
    • Core manufacturing
    • Financials
    • Inventory
  • Enterprise$1500/month
    • Advanced modules
    • IoT integration
    • Advanced analytics

Which should you pick?

Choose ADempiere if

  • You need application dictionary.
  • You want to start without paying.
  • You work on Web, Windows, macOS, Linux, Self-hosted.
  • You also want financial accounting.
ADempiere review

Choose Plex Manufacturing Cloud if

  • You need built-in mes.
  • You work on Cloud, Mobile, Web.
  • You also want quality management.
Plex Manufacturing Cloud review

Questions people ask

Is ADempiere or Plex Manufacturing Cloud better?
Neither clearly leads. ADempiere starts at Free and Plex Manufacturing Cloud at $500/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, ADempiere or Plex Manufacturing Cloud?
ADempiere has a free tier; the other does not. Paid plans start at Free for ADempiere and $500/month for Plex Manufacturing Cloud.
Does ADempiere or Plex Manufacturing Cloud run on more platforms?
ADempiere runs on Web, Windows, macOS, Linux, Self-hosted. Plex Manufacturing Cloud runs on Cloud, Mobile, Web.
Can I use ADempiere for free?
Yes. ADempiere has a free tier, so you can try it without paying. Plex Manufacturing Cloud starts at $500/month.
What is ADempiere best used for?
ADempiere is most often used for a manufacturer in latin america with an existing adempiere consulting partner that needs localised tax and accounting behaviour a global vendor will not build, a company that wants to modify erp screens and document workflows without a vendor change request, using the application dictionary rather than code, an organisation with a hard requirement to keep financial data on its own servers under its own control with no cloud dependency, a systems integrator building a vertical erp product on a permissive base it can fork and ship without paying a licence fee. Of those, a manufacturer in latin america with an existing adempiere consulting partner that needs localised tax and accounting behaviour a global vendor will not build and a company that wants to modify erp screens and document workflows without a vendor change request, using the application dictionary rather than code are not what Plex Manufacturing Cloud is typically brought in for.
What can ADempiere do that Plex Manufacturing Cloud cannot?
ADempiere covers Application dictionary, Financial accounting, Order to cash and procure to pay, Manufacturing. Plex Manufacturing Cloud covers Built-in MES, Quality management, Lot and serial traceability, Production scheduling. Both handle Inventory and warehouse.

Answered from the vendors’ own pages

ADempiere: Should I choose ADempiere or iDempiere?

Look at iDempiere first. It is a later fork of the same codebase with a more active community and a modular OSGi architecture. Choose ADempiere if a specific partner or localisation you need only exists there.

Plex Manufacturing Cloud: Can I run Plex on my own servers?

No. It is delivered as multi-tenant cloud software only. If you need an on premise deployment, this product cannot meet that requirement at any price.

ADempiere: Is ADempiere free?

The software is GPL licensed with no licence fee. The cost is implementation, customisation and permanent in-house maintenance, which for a real deployment is substantial.

Plex Manufacturing Cloud: What happens to my customisations at upgrade time?

There are no customisations in the traditional sense. Extensions are built with the platform's own tooling and are carried forward by the vendor. That is the trade you are making: less freedom to modify, no upgrade project.

ADempiere: Is the project still alive?

Development continues on GitHub with commits into 2026, but the official website is down and the last stable release is from January 2023. Treat it as maintained rather than actively advancing.

Plex Manufacturing Cloud: Has Rockwell's ownership changed the product?

It has placed Plex inside a portfolio with Rockwell's automation, maintenance and analytics products, which pulls the roadmap towards integration with that estate. Whether that helps depends on whether your plant runs Rockwell equipment. Ask about the specific roadmap items you care about.

ADempiere: What is the application dictionary?

It is the metadata layer inherited from Compiere that stores the definition of every window, field and validation rule as data, so you can change the application without touching source code.

Plex Manufacturing Cloud: Is the finance module enough on its own?

For a single country manufacturer, usually yes. For a group consolidating several entities across countries with statutory reporting obligations, ask specifically about your requirements, because this is the part of the product most likely to fall short.

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