Focused crawls are collections of frequently-updated webcrawl data from narrow (as opposed to broad or wide) web crawls, often focused on a single domain or subdomain.
Open Location Code is a library to generate short codes, called "plus codes", that can be used as digital addresses where street addresses don't exist.
QGIS tools to capture and zoom to coordinates using decimal, DMS, WKT, GeoJSON, MGRS, UTM, and Plus Codes notation. Provides external map support, MGRS & Plus Codes conversion and point digitizing tools.
Geodesy PHP - Port of some known geodesic/math functions for getting distance from a known point A to a known point B given their coordinates. It also supports conversion between units of length, Polar position to Cartesian coordinates, and different Reference Datums.
Calculates the sunrise and sunset for a given date and location (using GEO coordinates). This library uses the method outlined NOAA Solar Calculations Day spreadsheet found at http://www.esrl.noaa.gov/gmd/grad/solcalc/calcdetails.html.