Japanese Morphological Dictionary for ChaSen

https://sourceforge.jp/projects/ipadic/devel/

Tools for IP based Geo-blocking and Geo-routing

https://cyclaero.github.io/ipdb/

Tool to measure maximum TCP and UDP bandwidth

https://sourceforge.net/projects/iperf2/

Improved tool to measure TCP and UDP bandwidth

https://software.es.net/iperf/

Official DShield client for ipfilter firewall logs

http://www.dshield.org/linux_clients.php#freebsd

DShield client for ipfw logs

http://www.dynamical-systems.org/ipfw/

CLI to manage IPMI systems

https://codeberg.org/IPMITool/ipmitool

Software package for large-scale nonlinear optimization

https://projects.coin-or.org/Ipopt

Enhanced Interactive Python shell

https://ipython.org/ https://ipython.readthedocs.io/en/stable/ https://github.com/ipython/ipython

High performance realtime 3D engine

http://irrlicht.sourceforge.net/

Modular IRC client with many features

https://irssi.org/

Collection of useful scripts for the irssi IRC-client

https://scripts.irssi.org/

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/products/DHCP/

ISC Dynamic Host Configuration Protocol server

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

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

https://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

https://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

https://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/