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ERP · head to head

iDempiere vs Katana MRP

iDempiere logo

iDempiere

ERP

Community-governed open source ERP, CRM and supply chain built on Java, OSGi and PostgreSQL

From
Free
Rated
-
Full reviewWebsite
Katana MRP logo

Katana MRP

ERP

Smart manufacturing software for scaling brands

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: iDempiere there is no vendor, so there is no support contract, no service level agreement and nobody to escalate to; you either build the skills internally or you depend entirely on a local partner whose quality you must judge yourself.; Katana MRP the free plan caps SKUs at 30 after a 15 day unlimited period
  • They diverge on capability: iDempiere covers Application dictionary, Katana MRP covers Visual production scheduling.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which iDempiere and Katana MRP actually diverge.

Attributes where iDempiere and Katana MRP differ
AttributeiDempiereKatana MRP
Pricing modelOpen source, no licence feeusage-based
PlatformsWeb, Self-hosted, Docker, Linux, WindowsCloud, Web, Mobile
FoundedUnknown2017

Identical on both: starting price (Free), free tier (Yes), 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 iDempiere

  • Application dictionary
  • OSGi plug-in architecture
  • Multi-organisation accounting
  • Materials management
  • Manufacturing
  • Workflow engine
  • Report and print engine
  • No paid edition

Only in Katana MRP

  • Visual production scheduling
  • Real-time inventory
  • Bill of materials
  • Purchase orders
  • Shop floor app
  • Shopify
  • WooCommerce
  • QuickBooks

What people use each for

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

iDempiere

  • A distributor wants multi-organisation, multi-currency accounting and warehouse costing without a per-user ERP licence that scales with headcount.not Katana MRP
  • An organisation that has been caught by an open core vendor moving features into a paid tier wants an ERP with no company that can make that decision.not Katana MRP
  • A team needs heavy customisation of screens, fields and approval workflows that must survive version upgrades, which the application dictionary makes possible without forking.not Katana MRP
  • A public sector or university body in Latin America or Indonesia needs a locally supportable ERP where the source and the implementation skills are both available in-country.not Katana MRP

Katana MRP

  • Manufacturing resource planning for small production businessesnot iDempiere
  • Tracking live inventory across making, selling and purchasingnot iDempiere

Where each one falls short

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

iDempiere

  • There is no vendor, so there is no support contract, no service level agreement and nobody to escalate to; you either build the skills internally or you depend entirely on a local partner whose quality you must judge yourself.
  • It demands real Java, OSGi and PostgreSQL administration, so the running cost is a systems engineer rather than a subscription, and that engineer is harder to hire than a PHP developer.
  • The ZK-based interface is dense and dated, with a data-entry feel inherited from Compiere that staff used to modern software find hostile, which drives up training cost.
  • Localisation depends on community contribution, so tax, payroll and statutory reporting for your country may be absent, out of date or maintained by one person, and you may end up funding it yourself.
  • The documentation is a community wiki with gaps and stale pages, and much of the practical knowledge sits in forum threads and partner heads rather than in anything you can hand to a new administrator.

Katana MRP

  • The free plan caps SKUs at 30 after a 15 day unlimited period
  • The Core plan starts at $299 a month and includes one location, with more sold as a usage based add on
  • Core is billed per sales order delivered on top of the base price, so cost tracks throughput
  • Manufacturing management, traceability and warehouse management are separate add ons at $199, $249 and $149 a month
  • A full manufacturing setup therefore stacks to well above the headline $299

Pricing, plan by plan

iDempiere

Free
  • iDempiereFree
    • Full ERP, CRM and supply chain source
    • Unlimited users and organisations
    • No enterprise edition and no feature gating
  • Implementation partner$undefined/year
    • Local partners provide installation, configuration, training and support
    • Priced per engagement, not published
    • Realistically the only viable route for a production deployment

Katana MRP

Free
  • FreeFree
    • 30 SKUs (unlimited during 15-day trial)
    • Unlimited users
    • Unlimited integrations
  • Core$299/month
    • Unlimited SKUs
    • Unlimited users
    • Unlimited integrations
  • Advantage$null/mo
    • Custom annual contract
    • Everything in Core plus custom integrations
    • Custom dashboards and automations

Which should you pick?

Choose iDempiere if

  • You need application dictionary.
  • You want to start without paying.
  • You work on Web, Self-hosted, Docker, Linux, Windows.
  • You also want osgi plug-in architecture.
iDempiere review

Choose Katana MRP if

  • You need visual production scheduling.
  • You want to start without paying.
  • You work on Cloud, Web, Mobile.
  • You also want real-time inventory.
Katana MRP review

Questions people ask

Is iDempiere or Katana MRP better?
Neither clearly leads. iDempiere starts at Free and Katana MRP at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, iDempiere or Katana MRP?
iDempiere starts at Free and Katana MRP at Free.
Does iDempiere or Katana MRP run on more platforms?
iDempiere runs on Web, Self-hosted, Docker, Linux, Windows. Katana MRP runs on Cloud, Web, Mobile.
Can I use iDempiere for free?
Both have a free tier, so you can try either at no cost before committing.
What is iDempiere best used for?
iDempiere is most often used for a distributor wants multi-organisation, multi-currency accounting and warehouse costing without a per-user erp licence that scales with headcount., an organisation that has been caught by an open core vendor moving features into a paid tier wants an erp with no company that can make that decision., a team needs heavy customisation of screens, fields and approval workflows that must survive version upgrades, which the application dictionary makes possible without forking., a public sector or university body in latin america or indonesia needs a locally supportable erp where the source and the implementation skills are both available in-country.. Of those, a distributor wants multi-organisation, multi-currency accounting and warehouse costing without a per-user erp licence that scales with headcount. and an organisation that has been caught by an open core vendor moving features into a paid tier wants an erp with no company that can make that decision. are not what Katana MRP is typically brought in for.
What can iDempiere do that Katana MRP cannot?
iDempiere covers Application dictionary, OSGi plug-in architecture, Multi-organisation accounting, Materials management. Katana MRP covers Visual production scheduling, Real-time inventory, Bill of materials, Purchase orders.

Answered from the vendors’ own pages

iDempiere: Is iDempiere the same as ADempiere or Compiere?

It shares the lineage. iDempiere forked from ADempiere in 2011 to rebuild the platform on OSGi, and it is the branch that remains actively developed.

Katana MRP: How much does Katana MRP cost?

Katana offers a free plan with 30 SKUs and all core features. Core plan starts at $299/month for unlimited SKUs and users. Usage-based pricing applies to sales orders delivered and additional locations beyond the 1 included. Add-ons like Manufacturing Management cost $199/month.

Source
iDempiere: Is there a paid or enterprise edition?

No. There is no commercial owner and no feature gating. Money is spent on implementation partners and hosting, not on licences.

Katana MRP: How does Katana charge for multiple locations?

Core plan includes 1 location. Additional locations beyond the included location are charged separately with per-unit costs decreasing at higher volumes. Exact pricing for additional locations is calculated based on scale.

Source
iDempiere: What does it actually cost to run?

Nothing in licence fees, and a great deal in skills: expect a partner implementation and ongoing Java and PostgreSQL administration, which for a mid-sized company is comparable to a commercial subscription.

Katana MRP: What are the manufacturing add-on costs for Katana?

Katana charges $199/month for Manufacturing Management, $249/month for Traceability, and $149/month for Warehouse Management add-ons. Onboarding package costs $2,000 but is included with Core plan.

Source
iDempiere: Which database does it need?

PostgreSQL or Oracle. PostgreSQL is the mainstream community choice and the one most partners deploy.

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