Dyalog

Dyalog refers to a software company and its flagship product, Dyalog APL, a modern implementation of the APL programming language. Dyalog APL is designed for interactive development, numerical computing, and data analysis, with an emphasis on the array-oriented programming style that characterizes APL.

Dyalog APL provides a cross-platform interpreter and development environment. It runs on Windows, macOS, and Linux and includes an integrated editor, interactive workspace, and debugging tools. The language supports Unicode, rich array operations, and concise notation. It also offers interoperability with other technologies, including .NET and Java, enabling integration with existing software ecosystems, and supports parallel processing to leverage multi-core hardware.

The Dyalog ecosystem includes documentation, tutorials, training, consulting, and technical support. The company hosts a user community with forums and sample code, and it organizes events such as an annual user conference. Licensing includes commercial options for organizations and a free Personal Edition intended for non-commercial use, learning, and experimentation.

Historical context places Dyalog APL within the broader family of APL languages developed since the 1960s by Kenneth Iverson and his collaborators. Dyalog APL continues that tradition by prioritizing expressive, high-productivity programming for array computations while adapting to modern software development practices, interfaces, and performance needs.