app-admin

dev-php

net-voip

app-arch

dev-python

net-vpn

app-backup

dev-qt

sci-biology

app-crypt

dev-ruby

sci-mathematics

app-editors

dev-util

sci-misc

app-eselect

dev-vcs

sys-apps

app-forensics

games-arcade

sys-block

app-misc

games-engines

sys-fs

app-office

games-util

sys-kernel

app-portage

media-fonts

sys-process

app-shells

media-gfx

virtual

app-text

media-libs

www-apps

app-vim

media-sound

www-client

dev-cpp

net-analyzer

www-nginx

dev-db

net-firewall

www-servers

dev-java

net-im

x11-apps

dev-lang

net-irc

x11-drivers

dev-libs

net-libs

x11-misc

dev-lua

net-misc

x11-plugins

dev-perl

net-p2p