Need a high performance OPC UA stack for integrating into your products?

OPC UA SDK for Embedded Targets


  • Written in C99 with architecture-specific plugins (POSIX)
  • Runs on Windows, Linux, QNX, Android and diverse embedded systems
  • Compiled server can be smaller than 100kb
  • Full-stack real-time performance available for x86 + Linux + PREEMPT_RT + Intel i210 hardware


  • Event-based architecture
  • Single or multi-threaded



  • Information model can be modified at runtime
  • Generation of data types and information models from XML specification files




OPC UA SDK for Embedded Targets

Open source package

open62541 stack is an open, royalty free, portable and flexible stack bundle implementing IEC 62541 under open source license, that places no obligations for use in proprietary products and is available for free download. Open source implementation of OPC UA is available in github.

Standard package

Ready to use demo kit to learn the technology along with a free one-day online training session, providing basic introduction to OPC UA, TSN, open62541 and guidelines for using the kit. It also includes a one-day complimentary architectural consulting workshop and permits you to choose between x86+Linux implementation and ARM+FreeRTOS.

Premium package

Building on top of our standard package, our premium package starts with an intensive architecture consulting workshop at your premises, where Kalycito consultants sit face to face with your team and write down your functional (system, edge, fog and cloud) and non-functional (safety, security and availability etc) requirements and use-cases. This is then mapped with Kalycito SDK features to arrive at an optimal architecture for the proposed system that balances time-to-market and cost criteria.

IIC TSN Testbed Brochure

Time Sensitive Networking (TSN) is key for industrial applications such as process and machine control where low communication latency and minimal jitter are critical to meeting closed loop control requirements. TSN is the first fully open, standard and interoperable way to fulfill these requirements.




  • Press release on “OPC Foundation extends OPC UA including TSN down to field level” Click here
  • Resourceful article on “open62541 stack” Click here
  • Intel patches