kurt@kmk-computers.de Kurt Kanzenbach open62541 (http://open62541.org) is an open source and free implementation of OPC UA (OPC Unified Architecture) written in the common subset of the C99 and C++98 languages. 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 applications. open62541 library is platform independent. All platform-specific functionality is implemented via exchangeable plugins. Plugin implementations are provided for the major operating systems. Enable encryption support using net-libs/mbedtls Enable encryption support using dev-libs/openssl Enable OPC/UA Pub/Sub extensions Build additional shell tools open62541/open62541