Open source ERP makes the source code openly available. Companies can inspect, adapt and extend the technical foundation, with their own team or an external provider. Unlike proprietary systems, further development does not depend on a single vendor alone.

What this means in practice:

• Choice of provider: Operations, support and extension work can move to a different provider if quality or terms no longer fit.
• Cost structure: No per-seat license costs. Budget flows into processes, integration and operations.
• Transparency: Customizations and interfaces are traceable, not locked behind vendor-only documentation.
• Adaptability: Processes are modeled to fit the business, not squeezed into rigid standard modules.

Open source is no guarantee of independence on its own. What matters is the license model, documentation of customizations, and whether data stays exportable. A company that buys the “open source” label but only hosts and extends with the original vendor still has vendor lock-in.

For vendor evaluation, look at the operating model, the community or vendor ecosystem, upgrade paths, and who takes over operations after termination. Digital sovereignty comes from this combination, not from software alone.

Open source ERP suits companies that want to tie their ERP to their own processes long-term and are willing to actively manage operations and further development.