app-admin

dev-perl

sci-electronics

app-benchmarks

dev-python

sci-geosciences

app-doc

dev-tcltk

sci-libs

app-editors

dev-tex

sci-mathematics

app-forensics

dev-util

sci-misc

app-portage

media-gfx

sci-physics

app-shells

media-libs

sci-visualization

app-text

net-firewall

sys-apps

app-vim

net-ftp

sys-cluster

dev-cpp

net-libs

sys-devel

dev-java

net-misc

sys-infiniband

dev-lang

perl-core

virtual

dev-libs

sci-astronomy

x11-libs

dev-lua

sci-biology

x11-misc

dev-ml

sci-chemistry