JAL/j803

api

Application programming interfaces

api/expat - libexpat
api/gles - Modern OpenGL API
api/jni - JNI
api/lapacke - LAPACKE
api/ncurses - NCURSES/PDCURSES API

arc

Archivers, files, zips etc.

arc/zip - zip file utilities
arc/ziptrees - Zips and Unzips directory trees
arc/zlib - zlib utilities

convert

Conversions

convert/jiconv - J iconv encoding conversion
convert/json - json
convert/misc - miscellaneous scripts

data

Database

data/ddmysql - Data driver for MySQL
data/ddsqlite - Data driver for SQLite
data/jd - Jd
data/jdb - JDB
data/jfiles - J component file and keyed file
data/jmf - J Memory Mapped File
data/odbc - ODBC
data/sqltable - sqltable

debug

debug/dissect - Run a sentence and produce a 2D display of results
debug/lint - Load a script and check its syntax
debug/tte - Explicate a given tacit verb

demos

Demos

demos/coins - coins project demo
demos/isigraph - isigraph demos
demos/wd - wd demos
demos/wdplot - Plot demos wd emulation

docs

Generation, conversion, retrieval of documentation

docs/help - J Help Files
docs/joxygen - Documenting J Scripts

finance

Financial

finance/actuarial - Actuarial functions
finance/interest - Compound interest functions

format

Formats, rendering and reports

format/datefmt - Date formatting functions
format/printf - C-style printf formatting
format/publish - builds pdf reports from markup
format/sbox - Displaying boxed nouns containing Unicode glyphs
format/zulu - Strings conversion package
format/zulu-bare - Strings conversion package: BARE version
format/zulu-lite - Strings conversion package: LITE version

games

Games

games/minesweeper - Classic Minesweeper game
games/nurikabe - Nurikabe
games/pousse - pousse
games/solitaire - solitaire

general

General-purpose utilities

general/dirtrees - Copy and delete directory trees
general/dirutils - Additional directory utilities
general/inifiles - Platform neutral interface for INI files
general/jod - JOD J Object Dictionary
general/joddocument - JOD Documentation
general/jodsource - JOD Object Dictionary Source
general/misc - miscellaneous scripts
general/primitives - Primitives
general/unittest - Unit Test Framework

graphics

2d, 3d graphics and planar graphs

graphics/afm - AFM
graphics/bmp - bitmap utilities
graphics/cairo - cairographics
graphics/color - Color tables
graphics/d3 - D3 (Data Driven Documents) for JHS
graphics/gl2 - gl2
graphics/gnuplot - Create gnuplot graphics
graphics/graph - Graph
graphics/jpeg - jpeg utilities
graphics/plot - Plot
graphics/png - png utilities
graphics/print - print
graphics/treemap - Displays a treemap
graphics/viewmat - Displays a viewmat

gui

GUI utilities

gui/android - jandroid

ide

Integrated development environment

ide/jhs - JHS IDE
ide/qt - Qt IDE

labs

labs/labs - LABS

math

Mathematics

math/cal - Scientific calculator engine
math/deoptim - Differential Evolution for optimization of multidimensional functions
math/eigenpic - eigenpic
math/fftw - FFTW
math/flann - flann
math/lapack - LAPACK
math/misc - miscellaneous scripts
math/mt - Matrix toolbox
math/tabula - TABULA - scientific calculator
math/uu - Scientific units conversion package

misc

misc/classroom - Utilities for teaching classes in J
misc/miscutils - Miscellaneous utility definitions

net

Communications, Sockets and other ports

net/clientserver - Simple client server

profiles

profiles/profiles - Usggested User Profiles

sockets

sockets/socklib - Routines for multiple asynchronous sockets
sockets/sockutils - Routines for web transactions

stats

Statistics

stats/base - Basic statistics package
stats/distribs - Verbs for working with distributions
stats/r - Interfaces to R statistical package
stats/rlibrary - R library using Rserve interface

tables

Spreadsheets, CSV, etc.

tables/csv - Read and write CSV files and strings
tables/dsv - Read/write delimiter-separated files and strings
tables/excel - Reads Excel files using OLE
tables/tara - Read/write Excel *.xls files
tables/wdooo - ole automation client

types

Representations of dates, numerals, currency

types/datetime - Working with dates and times

web

Web programming

web/gethttp - Retrieve files from web