Letter: J
- jadetex-3.12-9: TeX macros used by Jade TeX output.
- jaf-20030319-1: GNU JavaBeans Activation Framework
- jakarta-regexp-1.2-12: Jakarta Regular Expression Package
- javamail-20031006-1: GNU JavaMail framework
- jfsutils-1.1.2-2: Utilities for managing the JFS filesystem.
- jisksp14-0.1-11: 14 dots jis auxiliary kanji font
- jisksp16-1990-0.1-11: 16 dots jis auxiliary kanji font
- jpilot-0.99.6-1: Jpilot pilot desktop software
- junit-3.8.1-1: Regression testing framework for Java
- jwhois-3.2.2-1: Internet whois/nicname client.