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ERP · head to head

ADempiere vs Zycus

ADempiere logo

ADempiere

ERP

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

From
Free
Rated
-
Full reviewWebsite
Zycus logo

Zycus

ERP

Source-to-pay suite with heavy AI positioning, priced by module and quoted throughout

From
On request
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.; Zycus implementations run long and are consultant-led, so the gap between the sales demonstration and a configured live system is measured in quarters, during which the licence is already being paid.
  • They diverge on capability: ADempiere covers Application dictionary, Zycus covers Spend analysis.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which ADempiere and Zycus actually diverge.

Attributes where ADempiere and Zycus differ
AttributeADempiereZycus
Starting priceFreeOn request
Pricing modelOpen source, no licence feequote
Free tierYesNo
PlatformsWeb, Windows, macOS, Linux, Self-hostedWeb, iOS, Android

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 Zycus

  • Spend analysis
  • eSourcing
  • Contract management
  • Supplier management
  • Procure-to-pay
  • Invoice processing
  • Merlin AI agents
  • Savings tracking

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

Zycus

  • A manufacturer with several ERP instances that cannot answer what it spends with a given supplier group-widenot ADempiere
  • A procurement function running frequent reverse auctions that needs award scenario optimisation rather than a spreadsheetnot ADempiere
  • An organisation that priced Coupa and Ariba, found the licence unaffordable, and needs comparable module coveragenot ADempiere
  • A regulated business needing supplier risk monitoring and contract obligation tracking in one audited systemnot 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.

Zycus

  • Implementations run long and are consultant-led, so the gap between the sales demonstration and a configured live system is measured in quarters, during which the licence is already being paid.
  • The AI capability is marketed well ahead of what is typically enabled in a customer instance, and buyers should insist on seeing agentic features running on their own data before valuing them in a business case.
  • A large share of engineering and support capacity sits in India, so North American and European customers need coverage windows and escalation paths written into the contract rather than assumed.
  • The user interface across modules is inconsistent, reflecting different development eras, which raises training cost and reduces adoption among occasional requisitioners.
  • Pricing is entirely quoted and structured around spend under management, so a business whose spend grows faces increases unrelated to how much it uses the software.

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

Zycus

On request
  • Zycus Source-to-Pay$undefined/year
    • Modules licensed individually or as a suite
    • Priced by spend under management, users and modules
    • Annual subscription, multi-year terms common

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 Zycus if

  • You need spend analysis.
  • You work on Web, iOS, Android.
  • You also want esourcing.
Zycus review

Questions people ask

Is ADempiere or Zycus better?
Neither clearly leads. ADempiere starts at Free and Zycus at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, ADempiere or Zycus?
ADempiere has a free tier; the other does not. Paid plans start at Free for ADempiere and On request for Zycus.
Does ADempiere or Zycus run on more platforms?
ADempiere runs on Web, Windows, macOS, Linux, Self-hosted. Zycus runs on Web, iOS, Android.
Can I use ADempiere for free?
Yes. ADempiere has a free tier, so you can try it without paying. Zycus starts at On request.
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 Zycus is typically brought in for.
What can ADempiere do that Zycus cannot?
ADempiere covers Application dictionary, Financial accounting, Order to cash and procure to pay, Inventory and warehouse. Zycus covers Spend analysis, eSourcing, Contract management, Supplier management.

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.

Zycus: Is it cheaper than Coupa or Ariba?

Usually on licence, and that price gap is the most common reason organisations shortlist it. Compare total cost including implementation, where the gap narrows.

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.

Zycus: Which module is strongest?

Spend analysis. Classifying dirty purchase data across multiple ERPs is where Zycus consistently performs well against alternatives.

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.

Zycus: How long is an implementation?

Plan for several quarters for a multi-module deployment. Phase it so one module delivers value before the rest go live.

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.

Zycus: What about support coverage?

Much of the delivery and support organisation is in India. Get the coverage hours, response times and escalation route into the contract explicitly.

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