The ISC Dynamic Host Configuration Protocol relay

https://www.isc.org/products/DHCP/

ISC Dynamic Host Configuration Protocol server

https://www.isc.org/dhcp/

Common code shared by many ISCD softwares

https://github.com/ISCDtoolbox/Commons

Integer Set Library

https://libisl.sourceforge.io/

Lists of the country, language, and currency iso names

https://salsa.debian.org/iso-codes-team/iso-codes

Character entity sets from ISO 8879:1986 (SGML)

Make XML documents translatable through po files

http://itstool.org/

Verilog simulation and synthesis tool

https://steveicarus.github.io/iverilog/

Intel Wireless 8260 bluetooth adaptor firmwares used by iwmbtfw(8)

https://packages.debian.org/firmware-iwlwifi

Low latency audio server

http://jackaudio.org/

Object-oriented SGML/XML parser toolkit and DSSSL engine

http://www.jclark.com/jade/

High performance image processing libraries for Java

http://java.sun.com/products/java-media/jai/

Setuid version of jexec to allow normal users access to jails

https://github.com/Intermedix/jailme

Perl/awk/sh regular expressions for Java

http://jakarta.apache.org/oro/

Build utility like make(1)

http://www.perforce.com/jam/jam.html

C library for encoding, decoding, and manipulating JSON data

http://www.digip.org/jansson/

Web proxy converting Japanese into Romaji

https://www.cgarbs.de/japana.en.html

Japanese AFM fonts

The famous jargon file (EPWING V1 format)

http://openlab.ring.gr.jp/edict/fpw/

Implementation of the codec specified in the JPEG-2000 standard

https://www.ece.uvic.ca/~frodo/jasper/

Updated Java timezone definitions

Provides API for creating and manipulation of 3D geometry

https://www.oracle.com/java/technologies/javase/java-3d.html https://download.java.net/media/java3d/builds/release/1.5.2/README-download.html

Just Journal for Java blogging app

https://www.justjournal.com/

Reference Implementation of JSR 919

https://javaee.github.io/javamail/

JSW enables a Java application to be run as a Unix daemon

https://wrapper.tanukisoftware.org/

Wrapper script for various Java Virtual Machines

Java XPath Engine

http://jaxen.org

Decoder implementation of the JBIG2 image compression format

https://github.com/ArtifexSoftware/jbig2dec

Lossless compression for bi-level images such as scanned pages, faxes

https://www.cl.cam.ac.uk/~mgk25/jbigkit/

Platform independent, plugin based dictionary

http://jdictionary.info/

JDictionary plugin: English-German dictionary

http://jdictionary.info/

JDictionary plugin: French-Hungarian dictionary

http://jdictionary.info/

JDictionary plugin: German-Hungarian dictionary

http://jdictionary.info/

JDictionary plugin: Interlingua-English dictionary

http://jdictionary.info/

Java library for accessing and manipulating XML documents

http://www.jdom.org/

Mainline variant of Kademlia Distributed Hash Table (DHT)

http://www.pps.univ-paris-diderot.fr/~jch/software/bittorrent/

Powerful programmer\x27s text editor written in Java

http://jedit.sourceforge.net/

Open-source continuous integration server

https://jenkins.io/

Open-source continuous integration server

https://jenkins.io/

Free and open source typeface for developers

https://www.jetbrains.com/lp/mono

Pty4J's native library

https://github.com/JetBrains/pty4j

IntelliJ cross-platform restarter

https://github.com/JetBrains/intellij-community/tree/master/native/restarter

IntelliJ SQLite native library

https://github.com/JetBrains/intellij-community/tree/master/platform/sqlite

jf Open Huninn by justfont

https://justfont.com/huninn/

Simulates a jigsaw puzzle and illustrates the use of clipping paths

http://gap.nongnu.org/jigsaw/

Java source to byte-code compiler made available by IBM

http://jikes.sf.net/

Convert JIS Kanji to GuoBiao Hanzi

English to Japanese dictionary for GNUstep

http://www.eskimo.com/~pburns/Dictionaries/

Command line client for posting JustJournal entries

https://www.justjournal.com/

Jerry's command-line LiveJournal.com entry system

http://umlautllama.com/projects/perl/#jlj