Community
Open source
Get started easily
Public support forums, online documentation, package management, and community calls.
Visit GitHubExpert support for professional OPC UA users.
Learn the technology, integrate open62541 into your product, and operate it confidently with direct access to core contributors.
Professional Support
Professional
€14,999 / year
Include OPC UA in your products
Private issue environment, vulnerability management, SBOMs, CRA-readiness consulting, and developer training.
Contact usEnterprise
Custom
Manage your software supply chain
Everything in Professional, plus maintenance for historical and custom releases and tailored on-site training.
Contact usCRA-ready support from the open-source stewards
Manufacturers integrating open62541 into products inherit obligations under the EU Cyber Resilience Act, including security, maintenance, documentation, and conformity responsibilities for third-party components.
Through a commercial relationship, the open-source steward can commit to the processes, artifacts, timelines, and long-term maintenance manufacturers need to meet those obligations.
Manufacturer
Places the final product on the market and remains responsible for CRA conformity and CE marking.
Open-source steward
Develops and maintains the shared component; commercial support enables reliable processes and SLAs.
Training & Education
open62541 developer training
From OPC UA fundamentals to hands-on C development with the open62541 API.
General OPC UA training
Core principles through advanced mechanisms, taught from the perspective of SDK implementers.
o6\Python developer training
The same technical foundation, with exercises built around the o6\Python SDK and an included developer license.
Custom workshops
On-site or remote sessions designed around your application, architecture, and technical goals.
Upcoming public training
German Edition
November 10 – 12, 2026
On-site in Karlsruhe, Germany
OPC UA / open62541 Developer Training
Three days of practical OPC UA and open62541 training led by the core maintainers, from fundamentals through secure communication and PubSub.
€1,900 netTraining participation, lunch, and beverages
View training and registerCustom Development
Client and server solutions
Production-ready OPC UA applications and reusable foundations designed around your system requirements.
Information modeling
Companion specifications, custom information models, and dependable code-generation workflows.
OS and architecture ports
Bring open62541 to embedded targets, RTOS platforms, and specialized processor architectures.
PubSub solutions
Design deterministic and scalable OPC UA PubSub communication for demanding industrial systems.
Security concepts
Secure communication, certificate lifecycle, GDS integration, and deployment hardening.
Custom open62541 plugins
Extend the SDK at the right abstraction layer without compromising long-term maintainability.