Browse overlay stuff
app-doc
games-roguelike
sci-mathematics
app-editors
lxde-base
sci-physics
app-misc
mail-client
sci-visualization
app-office
media-gfx
sys-apps
app-portage
media-libs
sys-fs
app-text
media-plugins
sys-kernel
dev-cpp
media-sound
www-misc
dev-embedded
media-tv
www-plugins
dev-libs
media-video
x11-apps
dev-ml
net-im
x11-libs
dev-perl
net-libs
x11-misc
dev-python
net-misc
x11-plugins
dev-util
net-p2p
x11-terms
games-misc
sci-libs
x11-wm