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ERP · head to head

ADempiere vs SAP S/4HANA

ADempiere logo

ADempiere

ERP

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

From
Free
Rated
-
Full reviewWebsite
SAP S/4HANA logo

SAP S/4HANA

ERP

SAP's current ERP, running only on the HANA database, with a migration deadline behind it

From
$5000/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.; SAP S/4HANA implementation and integration costs routinely run to several times the software cost, and the subscription clock typically starts long before go live, so the first contract year buys much less usable production time than the headline suggests.
  • They diverge on capability: ADempiere covers Application dictionary, SAP S/4HANA covers HANA in-memory database.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which ADempiere and SAP S/4HANA actually diverge.

Attributes where ADempiere and SAP S/4HANA differ
AttributeADempiereSAP S/4HANA
Starting priceFree$5000/month
Pricing modelOpen source, no licence feesubscription
Free tierYesNo
PlatformsWeb, Windows, macOS, Linux, Self-hostedCloud, Windows, Linux
FoundedUnknown1972

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
  • Inventory and warehouse
  • Manufacturing
  • Point of sale
  • Workflow engine
  • Java and PostgreSQL stack

Only in SAP S/4HANA

  • HANA in-memory database
  • Core finance
  • Supply chain and manufacturing
  • Country localisations
  • Fiori interface
  • Deployment options
  • Business Technology Platform
  • Embedded analytics

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 SAP S/4HANA
  • A company that wants to modify ERP screens and document workflows without a vendor change request, using the application dictionary rather than codenot SAP S/4HANA
  • An organisation with a hard requirement to keep financial data on its own servers under its own control with no cloud dependencynot SAP S/4HANA
  • A systems integrator building a vertical ERP product on a permissive base it can fork and ship without paying a licence feenot SAP S/4HANA

SAP S/4HANA

  • An existing ECC customer facing the end of mainstream maintenance and choosing between migration and replacementnot ADempiere
  • A multinational needing statutory compliance and consolidation across many countries in one system of recordnot ADempiere
  • A large manufacturer whose supply chain complexity exceeds what mid-market ERP can modelnot ADempiere
  • A group standardising a fragmented estate of divisional ERP systems onto a single templatenot 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.

SAP S/4HANA

  • Implementation and integration costs routinely run to several times the software cost, and the subscription clock typically starts long before go live, so the first contract year buys much less usable production time than the headline suggests.
  • Custom ABAP from an ECC installation must be assessed against the simplification list and either retired or rebuilt, and this remediation is normally the largest and most underestimated line in a brownfield conversion.
  • The public cloud edition constrains modification by design, so organisations that depend on non-standard processes are pushed either to change the process or to pay for the private edition, and that decision is often made after the contract is signed.
  • SAP intends extensions to live on the separately licensed Business Technology Platform, so the extensibility model that makes upgrades safe also adds a second subscription and a second set of skills to the total cost.
  • Exit is effectively impossible at reasonable cost, because the data model, the accumulated configuration and the trained staff around a large installation represent a switching cost that outweighs any competing vendor's discount, so the decision binds for a decade or more.

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

SAP S/4HANA

$5000/month
  • Cloud Standard$5000/month
    • Core ERP functionality
    • Cloud deployment
    • Real-time analytics
  • Cloud Premium$8000/month
    • Advanced features
    • AI and ML capabilities
    • Priority support

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 SAP S/4HANA if

  • You need hana in-memory database.
  • You work on Cloud, Windows, Linux.
  • You also want core finance.
SAP S/4HANA review

Questions people ask

Is ADempiere or SAP S/4HANA better?
Neither clearly leads. ADempiere starts at Free and SAP S/4HANA at $5000/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, ADempiere or SAP S/4HANA?
ADempiere has a free tier; the other does not. Paid plans start at Free for ADempiere and $5000/month for SAP S/4HANA.
Does ADempiere or SAP S/4HANA run on more platforms?
ADempiere runs on Web, Windows, macOS, Linux, Self-hosted. SAP S/4HANA runs on Cloud, Windows, Linux.
Can I use ADempiere for free?
Yes. ADempiere has a free tier, so you can try it without paying. SAP S/4HANA starts at $5000/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 SAP S/4HANA is typically brought in for.
What can ADempiere do that SAP S/4HANA cannot?
ADempiere covers Application dictionary, Financial accounting, Order to cash and procure to pay, Inventory and warehouse. SAP S/4HANA covers HANA in-memory database, Core finance, Supply chain and manufacturing, Country localisations.

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.

SAP S/4HANA: What is the actual deadline for leaving ECC?

SAP has set mainstream maintenance for the older Business Suite to end in 2027, with paid extended maintenance available for a further period to 2030. Confirm the current dates and terms with SAP directly, because the commercial detail has been adjusted more than once and it determines your negotiating window.

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.

SAP S/4HANA: Greenfield or brownfield?

Brownfield carries your existing configuration and custom code forward, which is faster to start and slower to finish because everything must be remediated. Greenfield rebuilds on standard processes, which costs more in change management and leaves a cleaner system. The right answer depends mostly on how much of your existing configuration you would defend to a board.

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.

SAP S/4HANA: Is the public cloud edition cheaper?

To run, generally yes. Whether it is cheaper overall depends on whether your processes fit within its extensibility limits. If they do not, the savings evaporate into workarounds or into a move to the private edition.

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.

SAP S/4HANA: How should I approach pricing negotiation?

Treat licence, infrastructure, BTP, the integrator and the internal backfill as one number and negotiate against it. Also settle indirect and digital access terms explicitly in writing, since usage from connected systems has been a recurring source of unbudgeted cost.

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