Sooner or later every growing company reaches the same question: stay on the legacy system, move to a bigger proprietary ERP, or look at the open-source world? After years implementing both, here is the comparison I wish I had read myself.
The real cost is not the list price
A proprietary ERP is paid for three times: the licence (often per user, forever), the customizations (at the vendor's rates, with no alternatives) and the exit — the day you want to leave, you discover what it costs to take your data with you.
With Odoo, the per-user licence simply does not exist in the Community edition. You pay for implementation and optional support: costs you control, and vendors you can change — because the code and the data remain yours.
Customization: adapt the software or the company?
The phrase I hear most from companies on closed systems: "the program can't do it, so we do it by hand in Excel". Every non-standard process becomes a vendor request, a quote, a wait.
Odoo is modular by construction: helpdesk, warehouse, treasury, HR — modules you enable, configure and, when truly needed, extend with custom code. The software follows the processes, not the other way round.
Where proprietary wins
Honesty: there are cases where a proprietary ERP remains the right choice.
- Very specific fiscal requirements already covered perfectly by the current software.
- A vertical niche with one dominant, mature product (some regulated industries).
- No customization needs, today or tomorrow, and a fee that doesn't hurt.
If all three apply to you, switching would cost more than it returns.
Three signs it's time to evaluate Odoo
- The fee grows with every new user — and the team is growing.
- The list of "things the system can't do" gets longer every quarter.
- Data lives in silos: the ERP, spreadsheets, departmental side-systems.
Migrating without stopping the company
The path I use in Odoo projects is always phased: critical modules first, on real migrated and verified data, running alongside the old system; then extension, module by module, once the previous one is truly adopted. The old ERP is switched off last — never first.
Considering the move? Let's talk: an honest assessment takes a few days — and sometimes the right answer is "stay where you are".