TheSquareFoot - Easily find the right office space for your budget
SafeGraph - SafeGraph's Points-of-Interest (POI) data, geofences, business listings, & foot-traffic data empowers firms to do better geolocation, marketing attribution, retail analytics, & location intelligence.
Pivotdesk - Office sharing marketplace
ipstack - ipstack is a free, real-time IP address to location JSON API and database service supporting IPv4 and IPv6 lookup.
Deskimo - Workspaces on demand, paid by the minute
GeoNode.org - Open Source Geospatial Content Management System