High performance realtime 3D engine

http://irrlicht.sf.net/

Modular IRC client with many features

https://irssi.org/

Collection of useful scripts for the irssi IRC-client

http://www.irssi.org/scripts/

Collection of additional irssi themes

https://irssi-import.github.io/themes/

Font by John Stracke based on the Isabella Breviary

https://www.thibault.org/fonts/isabella/

Kernel module enabling iSCSI/IBFT boot

https://github.com/jnielsendotnet/isboot

ISC Cron, former Vixie Cron

ftp://ftp.isc.org/isc/cron/

The ISC Dynamic Host Configuration Protocol client

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

The ISC Dynamic Host Configuration Protocol relay

https://www.isc.org/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

http://pkg-isocodes.alioth.debian.org/

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://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git

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

http://www.justjournal.com/

A Reference Implementation of JSR 919

http://www.oracle.com/technetwork/java/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

http://jbig2dec.sourceforge.net/

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

http://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

http://jenkins-ci.org/

Open-source continuous integration server

https://jenkins.io/

Free and open source typeface for developers

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

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/