The UCX framework is a collaboration between industry, laboratories, and academia to create an open-source production grade communication framework for data centric and high-performance applications. UCX is performance oriented for low-overheads in communication path allowing near native-level performance while enabling cross platform unified API supporting various network Host Card Adapters (HCAs) and processor technologies (x86, ARM and PowerPC). UCX is part of the HPC-X® ScalableHPC Software Toolkit.