app-admin

dev-php

net-vpn

app-arch

dev-python

sci-biology

app-backup

dev-qt

sci-mathematics

app-crypt

dev-ruby

sci-misc

app-editors

dev-util

sys-apps

app-emulation

dev-vcs

sys-block

app-eselect

games-util

sys-fs

app-forensics

media-fonts

sys-kernel

app-misc

media-gfx

sys-process

app-office

media-libs

virtual

app-portage

media-sound

www-apps

app-shells

net-analyzer

www-client

app-text

net-firewall

www-nginx

app-vim

net-im

www-servers

dev-cpp

net-irc

x11-apps

dev-db

net-libs

x11-drivers

dev-java

net-misc

x11-misc

dev-libs

net-p2p

x11-plugins

dev-perl

net-voip