xHarbour is an open-source programming language and compiler that maintains compatibility with CA-Clipper 5.3. As part of the extended xBase dialect, it features object-oriented capabilities derived from Visual Objects. The language syntax allows for multi-paradigm development, combining imperative and procedural styles with optional support for encapsulation through classes or universal functions. When compiled into C code using the xhbcl compiler or other compatible toolsets like GCC or MSVC++, Harbour can directly access external libraries written in C/C++. This feature enhances performance while supporting cross-platform implementation on Windows, Linux, macOS, Android, and iOS. Contributing to new releases under LGPL license conditions reinforces its long-term sustainability within the open-source community ecosystem.