Snap Map is a existing directory link related to Snapchat.
Earthdata Search is a browser-based tool for searching, discovering, visualizing, refining and accessing NASA Earth Observation data. The site requires a JavaScript-aware browser, and an upgraded browser is needed to use it. Earthdata Access is offered as a Section 508 accessible alternative.
An online map of England's light pollution and dark skies. Users can search by postcode, district or National Character Area, tick boundaries in the legend to display them, and click the map for detailed information about an area. The map uses OpenStreetMap and World Imagery data and was developed by LUC.
OpenStreetMap is a map of the world created by contributors and free to use under an open license. The site offers help resources, including a beginners' guide, a community forum, mailing lists and a wiki.
OpenCelliD is a community-built open database of cell towers and their estimated locations. Contributors record nearby cell identifiers with GPS locations, and the data is processed into cell location estimates. The dataset covers GSM, CDMA, UMTS, LTE and 5G NR networks and is available through an API and CSV downloads, supporting device geolocation without GPS.
CruiseMapper offers free cruise tracking, showing current ship positions, along with itinerary schedules, deck plans, cabin information, and reports on cruise accidents and incidents. It also publishes cruise news and covers a wide range of cruise lines and river cruises.
A World-Wide Web Virtual Library site that provided an organized overview of the history of cartography, including resources and activities, with links to map image sites and web articles. As of 1 January 2026, after almost 30 years, the site has been discontinued.
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Earthdata Search is a browser-based tool for searching, discovering, visualizing, refining and accessing NASA Earth Observation data. The site requires a JavaScript-aware browser, and an upgraded browser is needed to use it. Earthdata Access is offered as a Section 508 accessible alternative.
An online map of England's light pollution and dark skies. Users can search by postcode, district or National Character Area, tick boundaries in the legend to display them, and click the map for detailed information about an area. The map uses OpenStreetMap and World Imagery data and was developed by LUC.
OpenStreetMap is a map of the world created by contributors and free to use under an open license. The site offers help resources, including a beginners' guide, a community forum, mailing lists and a wiki.
OpenCelliD is a community-built open database of cell towers and their estimated locations. Contributors record nearby cell identifiers with GPS locations, and the data is processed into cell location estimates. The dataset covers GSM, CDMA, UMTS, LTE and 5G NR networks and is available through an API and CSV downloads, supporting device geolocation without GPS.
CruiseMapper offers free cruise tracking, showing current ship positions, along with itinerary schedules, deck plans, cabin information, and reports on cruise accidents and incidents. It also publishes cruise news and covers a wide range of cruise lines and river cruises.
A World-Wide Web Virtual Library site that provided an organized overview of the history of cartography, including resources and activities, with links to map image sites and web articles. As of 1 January 2026, after almost 30 years, the site has been discontinued.
