iDempiere is a volunteer-maintained, Tier II open-source ERP/CRM/SCM built on Java, ZK, and OSGi, positioned as a lean core ERP that avoids vendor lock-in.…
Best for iDempiere: iDempiere fits organizations that want a free, vendor-lock-in-free Tier II ERP/CRM/SCM core with enterprise-grade accounting and multi-entity support, run by teams comfortable with Java/ZK/OSGi and Maven-based deployment.
Best for Odoo Community: Odoo Community fits businesses that want a single free suite spanning accounting, CRM, sales, point of sale, inventory, manufacturing, and HR out of the box, backed by a large company and a 40,000+ app marketplace, with the option to add Odoo.sh hosting.
At a Glance
iDempiere
Odoo Community
Primary category
ERP & Business Management
ERP & Business Management
Rating
Not documented
Not documented
Pricing model
Open Source
Open Source
Starting price
Free
Free
Free plan
Not documented
Not documented
Free trial
Not documented
Not documented
Platforms
Web
Not documented
Team collaboration
Not documented
Not documented
AI features
Not documented
Not documented
Public API
Yes
Not documented
Key Differences
App/Module Breadth
iDempiere: iDempiere's documented feature set centers on enterprise-grade accounting, multi-entity support, and a scalable architecture rather than a large bundled app list.
Odoo Community: Odoo Community ships 40+ integrated apps out of the box spanning Accounting, Invoicing, Expenses, CRM, Sales, Point of Sale, Inventory, Manufacturing, Purchase, HR, and Website/eCommerce.
Determines whether a business gets broad multi-department coverage in one install or a narrower ERP core it extends itself.
Governance & Backing
iDempiere: iDempiere is maintained by a volunteer community of specialists, implementors, developers, and end-users worldwide, with no single commercial vendor behind it.
Odoo Community: Odoo Community is backed by Odoo, a company with 8,000+ employees, which also sells a paid Enterprise edition with extra apps, infrastructure, and professional services.
Vendor backing affects the availability of paid support and the long-term product roadmap.
Technology Stack
iDempiere: iDempiere is built on Java, ZK, and OSGi, using Maven for project management, and supports both Oracle and PostgreSQL databases.
Odoo Community: Odoo Community runs on a PostgreSQL-based data model with no proprietary data format; its application-layer stack isn't detailed in the available data.
The underlying stack determines what in-house development skills a team needs to customize or maintain the system.
Ecosystem Size
iDempiere: iDempiere's community ecosystem size (number of add-ons or extensions) is not documented.
Odoo Community: Odoo Community provides access to a marketplace of 40,000+ community-developed apps.
A larger marketplace generally means more pre-built integrations and less custom development.
Deployment & Hosting Options
iDempiere: iDempiere is self-hosted; official managed cloud-hosting options are not documented.
Odoo Community: Odoo Community can be self-hosted or deployed via Odoo's own Odoo.sh cloud hosting platform.
Managed hosting reduces the operational burden of running the ERP infrastructure.
Feature-by-Feature
Core Business Modules
Feature
iDempiere
Odoo Community
Accounting
Available
Available
CRM
Available
Available
Point of Sale
Not documented
Available
Manufacturing/Supply Chain
Available
Available
HR
Not documented
Available
Deployment & Technology
Feature
iDempiere
Odoo Community
Self-hosted deployment
Available
Available
Managed cloud hosting
Not documented
Available
Database support
Available
Available
Open-source license
Available
Available
Ecosystem & Support
Feature
iDempiere
Odoo Community
Community app marketplace
Not documented
Available
Commercial vendor backing
Unavailable
Available
Paid enterprise upgrade path
Not documented
Available
LTS releases
Available
Not documented
Pricing Compared
Starting price reflects the lowest paid tier, not the full cost for every team size or usage level.
iDempiere
Community (Self-Hosted) — Free N/A (open source)
Partner-Hosted / Managed Cloud — Custom pricing (varies by partner) Monthly or annual, set by implementation partner
Odoo Community
Community Edition (Self-Hosted) — Free N/A - open source
Enterprise Standard (upgrade path) — $31.10/user/month (billed annually) Monthly or annual
Completely free, open-source core with no per-user licensing fees
Broad functional coverage across ERP, CRM, SCM, MFG and POS in one integrated suite
OSGi plugin architecture allows customization without modifying core code
Runs on modest server hardware while scaling to hundreds of users
Long-running, stable codebase inherited from Compiere and ADempiere's accounting depth
Cons
Steeper learning curve and dated UI compared to modern ERPs like Odoo
No official vendor support; relies on a network of independent implementation partners
Smaller app and extension marketplace than commercial or VC-backed open-source ERPs
Requires in-house or partner technical expertise in Java and OSGi to customize
Documentation quality and depth vary since it is community-maintained
Odoo Community
Pros
No license fees or per-user costs, ever
Full source code access with freedom to modify and self-host
Large, mature ecosystem of apps, partners, and documentation
Modular design lets you run only the apps your business needs
No vendor lock-in since the code and data stay under your control
Cons
Lacks Enterprise-only modules like Studio, Field Service, and advanced Helpdesk
Self-hosting requires technical resources for setup, security, and upgrades
No official Odoo support or SLA is included, only community or partner support
Major version upgrades can require manual data migration work
No official mobile app or IoT Box integration available in this edition
Use Cases
Choose iDempiere: iDempiere fits organizations that want a free, vendor-lock-in-free Tier II ERP/CRM/SCM core with enterprise-grade accounting and multi-entity support, run by teams comfortable with Java/ZK/OSGi and Maven-based deployment.
Choose Odoo Community: Odoo Community fits businesses that want a single free suite spanning accounting, CRM, sales, point of sale, inventory, manufacturing, and HR out of the box, backed by a large company and a 40,000+ app marketplace, with the option to add Odoo.sh hosting.
Need both: There's no realistic scenario for running both — they're competing open-source ERP suites addressing the same core need, so a business would evaluate and pick one rather than combine them.
iDempiere
Integrated ERP for Manufacturing and Distribution SMBs — Small and mid-sized manfacturers use iDempiere to manage production planning, inventory and multi-entity accounting in one open-source system.
Vendor-Lock-In-Free Retail and POS Operations — Retail businesses deploy iDempiere's point-of-sale and inventory modules to run stores without recurring per-terminal licensing fees.
Custom ERP Extensions via OSGi Plugins — System integrators and in-house developers build custom modules on iDempiere's OSGi architecture to extend the ERP for industry-specific workflows without forking the core.
Odoo Community
Budget-conscious ERP for technical teams — Businesses with in-house developers self-host Odoo Community to run a full ERP without paying per-user license fees.
Custom ERP builds by system integrators — Odoo partners and system integrators use Community's open codebase as a foundation for heavily customized, industry-specific ERP deployments.
Proof-of-concept before committing to Enterprise — Companies evaluate Odoo by self-hosting Community first, testing workflows before deciding whether to move to the paid Enterprise edition for official support and extra modules.
Frequently Asked Questions
Is iDempiere really free?
Yes. iDempiere is completely free and open-source, and the project states it will remain open forever.
Is Odoo Community really free?
Yes, Odoo Community is open source under LGPLv3 and free to download, install, and modify, with no licensing cost.
How do the two compare in app coverage?
Odoo Community bundles 40+ integrated apps (accounting, CRM, sales, POS, inventory, HR, and more) out of the box, while iDempiere's documented feature set centers on a core ERP/CRM/SCM system with enterprise-grade accounting rather than a large bundled app list.
Who maintains each project?
iDempiere is maintained by a volunteer community of specialists, implementors, developers, and end-users. Odoo Community is backed by Odoo, a company with 8,000+ employees that also sells a paid Enterprise edition.
Can either be hosted in the cloud?
Odoo Community can be deployed via Odoo's own Odoo.sh cloud platform. iDempiere's official hosting options are not documented, implying self-hosting is the standard path.
What databases do they support?
iDempiere supports both Oracle and PostgreSQL databases. Odoo Community runs on a PostgreSQL-based data model.