Many aircraft broadcast information about how accurate their navigation system, which is almost always GPS, is at any given moment. The GPSJam map aggregates that data over 24 hours in time bins it into a hexagonal map. Green hexagons show where more than 98% of all aircraft who flew through that area reported good navigation accuracy. Yellow hexagons show where between 2% and 10% of aircraft reported low navigation accuracy. Red hexagons show where more than 10% of aircraft reported low navigation accuracy.
Data is pulled from ADSB Exchange.
FoxtrotGPS is an easy to use, free & open-source GPS/GIS application that works well on small screens, and is especially suited to touch input. It spun off of tangoGPS in 2010 with a focus on cooperation and fostering community innovation. FoxtrotGPS is freely available to the public for use, redistribution, and modification under the terms of the GPLv2. Requires gpsd.
GPS.gov's directory of status reports and operational directories.
Navigation Center RSS Feeds for Local Notices to Mariners (LNMs) for each Coast Guard District. These feeds are update automatically as soon as we publish the latest LNM for each districts.
Currently monitored by Tripwire.
For collecting GPS track logs suitable for uploading to Open Streetmap, gpsd includes a utility (gpxlogger) which connects to a running gpsd and generates those files. This is a link to its manpage.
A free, publically referrable, publically editable street map of the world, generated out of data contributed by the people who live there.
A collaborative website which maps wireless access points all across the world using information donated by enterprising wardrivers.
An openstreetmap app for android which keeps tabs on your GPS coordinates and shares your location in an anonymous fashion with a random Target ID and tracking code. Can share with chosen people or the public at large. Can transmit and receive data via SMS.
A personal webapp for tracking your own location. Lets you set up a private location diary or a realtime tracker to share with people you give access to. A phone app for iOS and android is the user front-end. The app can publish GPS coordinates and your phone's status to an arbitrary HTTP API endpoint or MQTT broker if you tell it to. Your location gets plotted on a map. The back-end is called Recorder and is found on github: https://github.com/owntracks/recorder
4220 links, including 280 private