IP location PHP class is a PHP class to query IPInfoDB. It supports single or multiple lookup, timezones, and a failover API.
What Is My IP displays the public IP address of a website's visitor with a map of the visitor's estimated location. It has many customizable options and includes a configuration file for Apache CGI.
Telize is a REST API built on Nginx and Lua which gets a visitor's IP address and queries location information from any IP address. It outputs JSON-encoded IP geolocation data, and supports both JSON and JSONP.
A Joomla extension for management of research-related work.
A small yet versatile PHP debug API.