app-admin

dev-ruby

net-im

app-containers

dev-util

net-libs

app-dicts

dev-vcs

net-misc

app-editors

mail-client

net-p2p

app-emulation

mail-mta

net-proxy

app-office

media-gfx

net-vpn

app-portage

media-libs

sci-biology

app-text

media-plugins

sci-ml

dev-build

media-sound

sys-apps

dev-db

media-video

sys-firmware

dev-games

net-analyzer

www-client

dev-lang

net-dns

www-misc

dev-libs

net-firewall

www-servers

dev-python

net-ftp