The TextMagic CodeIgniter Library by Bo-Yi Wu allows developers to integrate the TextMagic API into applications made with CodeIgniter, a PHP framework. This library requires CodeIgniter 2.1.0+, PHP 5.2.0+, and the PHP extensions for openssl, pcre, json, and curl.
The non-profit built for "opening America's government" has created an app to show off its Congressional data, as well as its API (our Sunlight Labs API profile). You can't get this app on the web, though, as it's available exclusively for the Android phone platform.
Plivo was founded after its founders, Venky Balasubramanian and Michael Ricordeau, found each other on Github and collectively decided, "[t]elephony is complex." Today, Plivo's focus is simple in statement, but complex in execution: Plivo offers "simple and powerful APIs that make it easier for businesses to develop telephony applications." Plivo's building block APIs allow developers to create telephony applications without learning the nuts and bolts of legacy telephony.