Install gnu-apl with Homebrew

Project links

• Homepage

Commands and aliases

• AP100
• AP210
• APserver
• Gtk_server
• apl

Project history

Juergen Sauermann announced GNU APL 1.0 on the GNU info list in September 2013 after several years of development, describing it as a GNU implementation of the ISO 13751 APL standard with nested arrays, complex numbers, and shared variables. The project kept its source on GNU Savannah and later shifted from occasional tarball releases to repository-based bug-fix distribution after the 1.9 release line.

The interpreter evolved as a large C++ codebase rather than a minimal language experiment. Its manual frames GNU APL as an APL interpreter plus GNU-specific extensions, and the home page points users to a quick tour, a reference manual, Doxygen-generated source documentation, and Savannah repositories for routine development use.

Adoption history

GNU APL serves the small but persistent APL community that wants a free software implementation available through GNU mirrors, source repositories, Debian packages, and ports for GNU/Linux, BSD, macOS, and Windows environments. The project also hosts a community page that collects contributed workspaces, libraries, editor modes, bindings, SQL interfaces, plotting tools, and ports.

Its ecosystem significance comes less from mass adoption and more from preservation: it gives package managers and free software distributions a maintained, source-available APL implementation with Unicode support and documented extensions.

How it is used

Practitioners use GNU APL interactively from a terminal, as a script interpreter, and as a host for APL workspaces. Typical uses include exploring array-oriented algorithms, running old or portable APL code, writing compact data-processing scripts, testing ISO APL behavior, and using GNU APL's non-standard system functions for files, databases, graphics, JSON, and native integrations.

Why package nerds care

For package maintainers, GNU APL is notable because it packages a historically specialized language in the familiar GNU Autotools and Savannah ecosystem. It also carries practical platform concerns that package builders care about, including APL glyph fonts, keyboard mappings, terminal behavior, and optional integrations.

Timeline

• 2013: GNU APL 1.0 announced on the GNU info list.
• 2014: GNU APL community page documented contributed libraries, ports, and workspaces.
• After 1.9: GNU APL release practice moved toward repository-delivered bug fixes.

Related projects

• APL2 and ISO/IEC 13751 define the language family and standard GNU APL targets.
• GNU Savannah hosts the project's official source repositories.
• Community projects include GNU APL editor integrations, APL package/library collections, SQL bindings, plotting tools, Android porting work, and keyboard helpers.

Sources

• https://lists.gnu.org/archive/html/info-gnu/2013-09/msg00014.html
• https://www.gnu.org/software/apl/
• https://www.gnu.org/software/apl/Community.html
• https://www.gnu.org/software/apl/apl.html