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J is a programming language in the APL language family. Unlike APL, it uses ASCII characters. It is useful in mathematical, statistical and logical analysis of arrays of data. The software comes with an IDE, standard libraries, utlities, a form designer, and supports an event-driven GUI for your application, integrated 2D and 3D graphics, memory mapped files, and interfacing with other programming languages. Supported systems include Windows, Linux, Mac OS X, SunOS, AIX, StrongArm PocketPC, and Mips PocketPC. You may use it free only if you are a student; otherwise you have to pay an annual fee (licence expires annually; see their site for the full licence).
APLSE is a freeware version of APL*Plus PC, a compiler for the APL programming language, a highly symbolic language (ie, it uses pictorial symbols rather than the traditional English words) and compact language.
According to its website, "A+ is a descendent of the language 'A'". Unlike APL, A+ is "geared" to business, supporting large capacity and high performance, with the "+" referring to the "electric graphical user interface". It is released under the GNU General Public License. Supported platforms include Linux, FreeBSD, AIX, IRIX, Mac OS X, NetBSD, Solaris, and Tru64.
SHARP APL for Linux (Personal Edition) is free for personal use. It apparently contains the same features as their APL interpreter for other OSes (AIX and Solaris), and comes with documentation in PDF form.
This package, for Linux, includes the APL font as well as the interpreter for APL11. You can use it on the Linux console as well as in X Windows. (You may have to compile it from the sources provided - I am not sure if the pre-compiled binaries are for the Alpha or the Intel processor.)
This is an APL! interpreter for APL\11. It is a "simple, intuitive, and terse rendition of APL as ASCII" (from the documentation). The interpreter itself is written in C.
Select the FreeAPL link on the linked page for what is apparently a Windows version of APL\11. APLX for Linux (Personal Edition) APLX for Linux Personal Edition is an APL development system. The old version linked to above is free for non-commercial use. You will have complete a download request form before you can get the software.
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