Spacehuntr - Experience unique spaces to work, play & stay
ipstack - ipstack is a free, real-time IP address to location JSON API and database service supporting IPv4 and IPv6 lookup.
TheSquareFoot - Easily find the right office space for your budget
ipapi - Web analytics with IP address lookup and location API
IndieWorkspace - A sneak peak at remote workspaces
ipgeolocation.io - Free IP Geolocation API and Accurate GeoIP Lookup Location Database