Presearch.org — privately decentralized search engine, powered by #blockchain technology
milled.com — search engine for searching through the texts of email marketing messages
Maps, Geolocation and Transport
Pastvu.com — View historical photos taken at a particular location on a map.
Mapnificent — Choose a city on the world map, then select an address on the map and see what places you can get to by public transport in a certain time interval (range from 1 to 90 minutes)
Communications
nperf.com/map — view the coverage area of different #cellular operators in different countries