Similar to GNU_Cライブラリ

IPodLinux

Iproute2

Iptables

IPython

IRAF

Irrlicht Engine

Irssi

Ispell

JACK Audio Connection Kit

JEdit

Jekyll (software)

Jetty (web server)

JFreeChart

Jigdo

Jitsi

JRuby

JuK

Jython

K-Meleon