Open Mercato vs Odoo — Open Source ERP Comparison 2026
Last updated: March 2026
Odoo is one of the most popular ERP/CRM systems in the world and one of the few that calls itself open source. The catch is that Odoo is split into two editions: Community (free but limited in modules) and Enterprise (a paid subscription with the full feature set). In practice, many critical modules — accounting, marketing automation, the Studio customisation tool — are only available in the Enterprise edition.
Open Mercato is a fully open-source platform — no edition split. Every CRM, ERP and B2B Commerce module is available without licence fees, with full access to the source code. You only pay for hosting and optional implementation services.
Both systems have their strengths. Odoo offers a massive module ecosystem and a mature community. Open Mercato focuses on transparency, fast implementation and no hidden costs. Below we compare both approaches point by point.
Comparison Table
| Criterion | Open Mercato | Odoo |
|---|---|---|
| Licence | Open source (LGPL) — free, full version | Community: LGPL (limited); Enterprise: paid subscription |
| Open-source model | 100% open source — one product, full code | Open core — free base + paid Enterprise modules |
| Price | EUR 0 licence — cost is hosting + implementation | Enterprise: from ~$24.90/user/mo + paid modules |
| Hosting | Self-hosted or cloud — full control | Odoo.sh (cloud), on-premise or Odoo Online (SaaS) |
| Customisation | Full — source code access, modern stack | Odoo Studio (Enterprise), XML/Python — requires framework knowledge |
| Module ecosystem | Integrated CRM + ERP + B2B Commerce modules | 40,000+ modules (some paid, quality varies) |
| Implementation time | 8-10 weeks | 4-16 weeks (depends on module configuration) |
| Community | Growing — SME-focused | Large, mature — Odoo Community Association (OCA) |
Cost Comparison
| Users | Open Mercato (yearly) | Odoo Enterprise (yearly) |
|---|---|---|
| 10 users | ~EUR 700 - 1,400 (hosting) | ~EUR 2,700 - 4,100 (subscription + modules) |
| 25 users | ~EUR 1,200 - 2,400 (hosting) | ~EUR 6,800 - 10,200 |
| 50 users | ~EUR 1,800 - 3,500 (hosting) | ~EUR 13,500 - 20,400 |
* Open Mercato costs cover infrastructure only. Odoo Enterprise costs based on ~$24.90/user/mo (Standard plan) plus typical modules. Odoo Community is free but lacks many key features.
When to choose Odoo
- You need very specific industry modules (e.g. manufacturing, fleet management, rental)
- Your team already knows the Odoo framework and wants to build on it
- You value a massive ecosystem of ready-made integrations and apps
- You accept the open-core model and Enterprise subscription for full functionality
When to choose Open Mercato
- You want a truly open-source system — no edition split and no hidden fees
- You need CRM + ERP + B2B Commerce in one platform without bolting on extra modules
- You prefer a modern tech stack and easy customisation
- Cost predictability matters — you pay for hosting, not per-user licences
- You're looking for fast implementation (8-10 weeks) without configuring dozens of modules
Looking for a fully open-source ERP with no hidden costs?
Book a free 30-minute call. We'll show how Open Mercato differs from Odoo and how much you can save.
Book a callSee also: Open Mercato vs Salesforce | Open Mercato vs SAP | Open Mercato vs Zoho | Open Mercato vs Subiekt | Open Mercato vs Dynamics