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ERP · head to head

Apache OFBiz vs Unit4

Apache OFBiz logo

Apache OFBiz

ERP

Java ERP and e-commerce framework from the Apache Foundation, sold as a toolkit not a product

From
Free
Rated
-
Full reviewWebsite
Unit4 logo

Unit4

ERP

ERP for people-based organisations where the cost centre structure keeps changing

From
$800/month
Rated
-
Full reviewWebsite

The short version

  • Only Apache OFBiz has a free tier, so it costs nothing to try first.
  • Each has a real cost: Apache OFBiz oFBiz has disclosed repeated critical vulnerabilities including pre-authentication remote code execution and authentication bypass chains, several exploited in the wild, so an internet-facing instance that is not patched promptly is a genuine breach risk rather than a theoretical one.; Unit4 manufacturing, warehouse management and supply chain planning are not the point of this product, so a business with significant inventory will find capability gaps that no amount of configuration closes.
  • They diverge on capability: Apache OFBiz covers Entity engine, Unit4 covers Flexible organisational model.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Apache OFBiz and Unit4 actually diverge.

Attributes where Apache OFBiz and Unit4 differ
AttributeApache OFBizUnit4
Starting priceFree$800/month
Pricing modelOpen source, no licence feesubscription
Free tierYesNo
PlatformsWeb, Linux, Windows, macOS, Self-hostedCloud, Web, Mobile
FoundedUnknown1987

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 Apache OFBiz

  • Entity engine
  • Service engine
  • Accounting
  • Order management
  • E-commerce storefront
  • Warehouse management
  • Manufacturing and MRP
  • Party model

Only in Unit4

  • Flexible organisational model
  • Project and time accounting
  • Financial management
  • Procurement
  • Human resources
  • Planning and forecasting
  • Reporting
  • Grant and fund accounting

What people use each for

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

Apache OFBiz

  • A systems integrator building a vertical industry product on a permissively licensed ERP core it can redistribute commerciallynot Unit4
  • An organisation with strong Java capability that needs an order and inventory data model it can extend rather than configurenot Unit4
  • A business that requires a permissive Apache 2.0 licence because GPL copyleft is unacceptable to its legal teamnot Unit4
  • A team replacing a bespoke in-house order management system that wants an entity model rather than a finished applicationnot Unit4

Unit4

  • A university or public body whose funding structure and reporting hierarchy change more often than its accounting system can keep up withnot Apache OFBiz
  • A professional services firm that needs time, project profitability and financials in one ledger rather than in three systemsnot Apache OFBiz
  • A nonprofit or NGO accounting for restricted funds and reporting to donors on how each was spentnot Apache OFBiz
  • An organisation going through a merger or restructure that needs comparative reporting across both the old and new structuresnot Apache OFBiz

Where each one falls short

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

Apache OFBiz

  • OFBiz has disclosed repeated critical vulnerabilities including pre-authentication remote code execution and authentication bypass chains, several exploited in the wild, so an internet-facing instance that is not patched promptly is a genuine breach risk rather than a theoretical one.
  • There is no vendor, no support contract and no hosted edition, so every deployment depends on either in-house Java skill or an integrator you find and vet yourself.
  • The screens and default workflows look and behave like enterprise software from the 2000s, and user acceptance in a finance or warehouse team is frequently the reason projects stall.
  • It is a framework rather than a configurable product, so meaningful deployments require Java, XML widget and entity engine development, which puts the real cost in developer months rather than licence fees.
  • Localisation for tax, statutory reporting and payroll is largely absent, so any country-specific compliance requirement has to be built, and that build has to be maintained against upstream releases.

Unit4

  • Manufacturing, warehouse management and supply chain planning are not the point of this product, so a business with significant inventory will find capability gaps that no amount of configuration closes.
  • Payroll is generally handled by a separate product or a regional third party rather than being included, so multi-country organisations end up managing several payroll vendors alongside the ERP.
  • Moving from an established on premise Agresso installation to the current cloud product is closer to a re-implementation than an upgrade, with data migration, process redesign and retraining to pay for on a system that already worked.
  • The consulting and partner ecosystem is considerably smaller than for SAP, Oracle or Microsoft, so specialist skills are harder to hire, cost more, and are concentrated in a small number of firms with limited availability.
  • The flexibility that makes reorganisation cheap also makes it easy to build a model nobody understands, and an organisation that has reconfigured its hierarchy repeatedly without documentation ends up unable to explain its own reporting.

Pricing, plan by plan

Apache OFBiz

Free
  • Self-hostedFree
    • Apache License 2.0, permissive and commercially redistributable
    • Accounting, order management, warehousing and manufacturing included
    • E-commerce storefront included

Unit4

$800/month
  • Professional Services$800/month
    • Project accounting
    • Resource management
    • Time tracking
  • Enterprise$2000/month
    • Advanced features
    • Multi-entity
    • Analytics

Which should you pick?

Choose Apache OFBiz if

  • You need entity engine.
  • You want to start without paying.
  • You work on Web, Linux, Windows, macOS, Self-hosted.
  • You also want service engine.
Apache OFBiz review

Choose Unit4 if

  • You need flexible organisational model.
  • You work on Cloud, Web, Mobile.
  • You also want project and time accounting.
Unit4 review

Questions people ask

Is Apache OFBiz or Unit4 better?
Neither clearly leads. Apache OFBiz starts at Free and Unit4 at $800/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Apache OFBiz or Unit4?
Apache OFBiz has a free tier; the other does not. Paid plans start at Free for Apache OFBiz and $800/month for Unit4.
Does Apache OFBiz or Unit4 run on more platforms?
Apache OFBiz runs on Web, Linux, Windows, macOS, Self-hosted. Unit4 runs on Cloud, Web, Mobile.
Can I use Apache OFBiz for free?
Yes. Apache OFBiz has a free tier, so you can try it without paying. Unit4 starts at $800/month.
What is Apache OFBiz best used for?
Apache OFBiz is most often used for a systems integrator building a vertical industry product on a permissively licensed erp core it can redistribute commercially, an organisation with strong java capability that needs an order and inventory data model it can extend rather than configure, a business that requires a permissive apache 2.0 licence because gpl copyleft is unacceptable to its legal team, a team replacing a bespoke in-house order management system that wants an entity model rather than a finished application. Of those, a systems integrator building a vertical industry product on a permissively licensed erp core it can redistribute commercially and an organisation with strong java capability that needs an order and inventory data model it can extend rather than configure are not what Unit4 is typically brought in for.
What can Apache OFBiz do that Unit4 cannot?
Apache OFBiz covers Entity engine, Service engine, Accounting, Order management. Unit4 covers Flexible organisational model, Project and time accounting, Financial management, Procurement.

Answered from the vendors’ own pages

Apache OFBiz: Is Apache OFBiz safe to run on the public internet?

Only with disciplined patching. It has shipped fixes for pre-authentication remote code execution and authentication bypass flaws, with CVEs continuing into 2026, and some have been exploited in the wild.

Unit4: Is Unit4 ERP the same thing as Agresso?

Yes, in lineage. Agresso is the earlier name for the same product line and long-standing customers still use it. Current marketing uses Unit4 ERP, and the cloud product is a substantially different deployment from the on premise Agresso installations still in service.

Apache OFBiz: What does it cost?

Nothing to licence. It is Apache 2.0. The cost is Java development, hosting and ongoing security maintenance.

Unit4: Can it run a manufacturing business?

Not well. This product is built for organisations whose cost base is people and projects. If your planning problem is materials and production capacity, look at a manufacturing ERP instead.

Apache OFBiz: Can I use it as a finished ERP?

Not realistically. It is a framework with reference applications, and most production deployments are custom builds on top of it.

Unit4: What actually justifies the price against a mainstream ERP?

The cost of change. If your structure is stable, the flexibility is worth little and a mainstream product is cheaper. If you reorganise regularly and each reorganisation currently means a consultancy engagement, that recurring cost is where the business case sits.

Apache OFBiz: Why choose it over a GPL ERP?

The Apache 2.0 licence is permissive, so an integrator can build and sell a derived commercial product without copyleft obligations.

Unit4: Is it sold direct or through partners?

Both. Unit4 sells and implements direct in its main markets and also works with partners. Ask which model applies to your region and country, because it determines who is accountable when the implementation slips.

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