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9 March 2018- Kalycito is recognized as the first commercial support partner for the Open Source OPC UA SDK open62541, a critical building block for Industry 4.0 and Industrial IoT. While the open62541 community handles support requests for the open source library and its development, Kalycito provides custom development and individual support (contact: [at]

open62541 is an open source and free implementation of OPC UA (OPC Unified Architecture). The library is usable with all major compilers and provides the necessary tools to implement dedicated OPC UA clients and servers, or to integrate OPC UA-based communication into existing


open62541 is licensed under the Mozilla Public License v2.0 which enables the library to also be used in projects that are not open source. Users have to publish changes under the same license only if they are made within the core library.