The open62541 library is free and open source under the MPL v2.0. For production deployments, however, professional backing is usually essential.
open62541 is licensed under the Mozilla Public License v2.0. The library is free of charge — even for commercial use. You can download, integrate, and ship it without any license fees.
In real-world operation, most organisations need professional expertise beyond what the community can provide — especially when regulatory obligations such as the EU Cyber Resilience Act (CRA) apply.
Manufacturers placing products with digital components on the EU market become responsible for security, maintenance, documentation, and conformity of third-party components like open62541. Under the CRA, you need reliable processes, artifacts, and long-term maintenance commitments for the open-source components you ship.
In a commercial collaboration, the open-source stewards at o6 Automation can commit to the processes, artifacts, timelines, and long-term maintenance that manufacturers need to meet these obligations.
Open Source
Public support forums, online documentation, package management, and community calls.
Visit GitHub14,999 € / year
Private issue environment, vulnerability management, SBOMs, CRA-readiness consulting, and developer training.
Contact o6 AutomationCustom
All Professional features plus maintenance of historical and customer-specific releases, and tailored on-site training.
Contact o6 AutomationHands-on OPC UA and open62541 developer training led by the core maintainers — from fundamentals through secure communication and PubSub.
Architecture, integration, platform porting, and new SDK features — tailored to your system requirements by the core team.
Get in touch with o6 Automation to discuss your support, training, or development needs.
Contact o6 Automation