Ip2region (2.0 - xdb) is a offline IP address manager framework and locator, support billions of data segments, ten microsecond searching performance. xdb engine implementation for many programming languages
Map3 is a decentralized map network which is impartial, secure and extremely robust, so that it is impractical to shut down just like the BitTorrent and the Bitcoin network. Map3 is free from control, free to participate, free base map.
