bt747 : MTK GPS Datalogger Device Control ( http://bt747.free.fr/ )
cdat-lite : Large suite of open source tools for the management and analysis of climate data ( http://proj.badc.rl.ac.uk/cedaservices/wiki/CdatLite )
congen : A package for generating the speeds, equilibrium arguments, and node factors of tidal constituents ( http://www.flaterco.com/xtide/files.html )
foxtrotgps : Easy to use, fast and lightweight mapping application (fork of tangogps) ( http://www.foxtrotgps.org/ )
gdal-grass : GDAL plugin to access GRASS data ( http://www.gdal.org/ )
gebabbel : QT-Frontend to load and convert gps tracks with gpsbabel ( http://gebabbel.sourceforge.net/ )
geocode-glib : GLib geocoding library that uses the Yahoo! Place Finder service ( https://git.gnome.org/browse/geocode-glib )
gmapcatcher : An offline viewer for different map providers ( https://code.google.com/p/gmapcatcher/ )
gmt : Powerful map generator ( http://gmt.soest.hawaii.edu/ )
gnome-maps : A map application for GNOME ( https://wiki.gnome.org/Apps/Maps )
googleearth : A 3D interface to the planet ( https://earth.google.com/ )
gpsbabel : GPS waypoints, tracks and routes converter ( http://www.gpsbabel.org/ )
gpscorrelate : Tool for adjusting EXIF tags of your photos with a recorded GPS trace ( http://freefoote.dview.net/linux_gpscorr.html )
gpsd : GPS daemon and library to support USB/serial GPS devices and various GPS/mapping clients ( http://catb.org/gpsd/ )
gpx-viewer : Simple program to visualize a gpx file ( http://blog.sarine.nl/gpx-viewer/ )
grass : A free GIS with raster and vector functionality, as well as 3D vizualization ( http://grass.osgeo.org/ )
gshhs : Global Self-consistent, Hierarchical, High-resolution Shoreline programs ( http://www.ngdc.noaa.gov/mgg/shorelines/gshhs.html )
gshhs-data : Global Self-consistent, Hierarchical, High-resolution Shoreline programs data ( http://www.ngdc.noaa.gov/mgg/shorelines/gshhs.html )
gtk-g-rays2 : GUI for accessing the Wintec WBT 201 / G-Rays 2 GPS device ( http://www.daria.co.uk/gps )
harmonics-dwf-free : Tidal harmonics database for libtcd ( http://www.flaterco.com/xtide/ )
harmonics-dwf-free-noncomm : Tidal harmonics database for libtcd ( http://www.flaterco.com/xtide/ )
josm : Java-based editor for the OpenStreetMap project ( http://josm.openstreetmap.de/ )
josm-plugins : Set of plugins for josm ( http://josm.openstreetmap.de/ )
libtcd : Library for reading and writing Tide Constituent Database (TCD) files ( http://www.flaterco.com/xtide/libtcd.html )
mapnik : A Free Toolkit for developing mapping applications ( http://www.mapnik.org/ )
mapnik-world-boundaries : Mapnik World Boundaries ( http://www.openstreetmap.org/ )
mapserver : OpenSource development environment for constructing spatially enabled Internet-web applications ( http://mapserver.org/ )
mc2bsbh : MapCal to BSBchart Header Utility ( http://www.dacust.com/inlandwaters/mapcal/ )
merkaartor : A Qt4 based map editor for the openstreetmap.org project ( http://www.merkaartor.be https://github.com/openstreetmap/merkaartor )
mtkbabel : MTKBabel is a Perl program to operate the i-Blue 747 GPS data logger ( http://sourceforge.net/projects/mtkbabel/ )
opencpn : a free, open source software for marine navigation ( http://opencpn.org/ )
opencpn-plugin-br24radar : Navico (Simrad, Lowrance) Broadband BR24/3G/4G Radar Plugin for OpenCPN ( http://opencpn-navico-radar-plugin.github.io/ )
opencpn-plugin-climatology : Climatology Plugin for OpenCPN (includes CL-DATA) ( http://opencpn.org/ocpn/downloadplugins )
opencpn-plugin-launcher : Launcher Plugin for OpenCPN ( http://opencpn.org/ocpn/downloadplugins )
opencpn-plugin-logbookkonni : Logbook Plugin for OpenCPN ( http://opencpn.org/ocpn/downloadplugins )
opencpn-plugin-objsearch : Chart Object Search Plugin for OpenCPN ( http://opencpn.org/ocpn/downloadplugins )
opencpn-plugin-ocpndebugger : NMEA-data and plugin-API Debugger Plugin for OpenCPN ( http://opencpn.org/ocpn/downloadplugins )
opencpn-plugin-statusbar : Statusbar Plugin for OpenCPN ( http://opencpn.org/ocpn/downloadplugins )
opencpn-plugin-weather_routing : Weather Routing Plugin for OpenCPN ( http://opencpn.org/ocpn/downloadplugins )
opencpn-plugin-weatherfax : Weatherfax Plugin for OpenCPN ( http://opencpn.org/ocpn/downloadplugins )
opencpn-plugin-wmm : World Magnetic Model Plugin for OpenCPN ( http://opencpn.org/ocpn/downloadplugins )
osgearth : Dynamic map generation toolkit for OpenSceneGraph ( http://osgearth.org/ )
osm-gps-map : A gtk+ viewer for OpenStreetMap files ( https://nzjrs.github.com/osm-gps-map/ )
osm2mp : Converts openstreetmap data to mp format (used e. g. by mkgmap) ( http://forum.openstreetmap.org/viewtopic.php?id=1162 )
osm2pgsql : Converts OSM planet.osm data to a PostgreSQL/PostGIS database ( http://wiki.openstreetmap.org/wiki/Osm2pgsql )
osmosis : Commandline tool to process openstreetmap data ( http://wiki.openstreetmap.org/index.php/Osmosis )
qgis : User friendly Geographic Information System ( http://www.qgis.org/ )
qlandkartegt : View and upload map files, track and waypoint data to your Garmin GPS device ( http://www.qlandkarte.org/ )
qlandkartegt-garmindev : Garmin drivers for qlandkartegt ( http://www.qlandkarte.org/ )
qmapshack : GPS mapping utility ( https://bitbucket.org/maproom/qmapshack/wiki/Home )
readosm : A complete Spatial DBMS in a nutshell built upon sqlite ( http://www.gaia-gis.it/spatialite )
seawater : Python version of the SEAWATER 3.2 MATLAB toolkit for calculating the properties of sea water ( https://pypi.python.org/pypi/seawater/ )
swmm : Storm Water Management Model - SWMM, hydrology, hydraulics, and water quality model ( http://www.epa.gov/ednnrmrl/models/swmm/index.htm )
tappy : Tidal Analysis in Python breaks hourly water level into tidal components ( http://tappy.sourceforge.net/ )
tcd-utils : Utilities for working with Tidal Constituent Databases ( http://www.flaterco.com/xtide/ )
tilecache : Web map tile caching system ( http://tilecache.org/ )
viking : GPS data editor and analyzer ( http://viking.sourceforge.net/ )
xtide : XTide provides tide and current predictions in a wide variety of formats ( http://www.flaterco.com/xtide/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a gentoo
For Paludis use this rsync : rsync://gentoo.zugaina.org/gentoo-portage
If you have a problem : ycarus(-at-)zugaina.org