UaGateway 1.5.3 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. Commonly, this program's installer has the following filename: WORDPAD.EXE. We recommend checking the downloaded files with any free antivirus. The most popular versions of the tool 1.4 and 1.3. This software is a product of UnifiedAutomation. The program lies within Development Tools, more precisely IDE.
From the developer:
UaGateway is a high performance Wrapper/Proxy programmed in C . It can be used for migrating the classic COM/DCOM based OPC Servers to the new OPC Unified Architecture. UaGateway is fully configurable through OPC UA Methods. It will comply with the OPC DI Specification (Device Integration) and will offer standardized diagnosis and configuration capabilities.
You may want to check out more software, such as Dark Basic Pro, TortoiseSVN 32 bit or SICStus Prolog, which might be similar to UaGateway.