Bit.ly PHP library by Yii, is an extension that helps to interact with the API. Requirements Yii 1.0 or above. What this PHP extension can do is to shorten an URL, expand a short URL into the original long form, validate API key, obtain number of clicks for a short URL, and check if a domain uses bit.ly Pro.
One of the greater pains mobile developers experience is trying to more closely relate native iOS apps. In this article, we compare and contrast three platforms--Facebook AppLinks, UseButton's Deep Linking SDK and Tapstream's Deferred Linking--that enable deep linking for iOS.
The article focuses on URL-Shortener APIs that appear in ProgrammableWeb's API directory. It includes Proofeditors.com and the popular Bit.ly API. Special features of the APIs include added security, special tools, and shortening for unique platforms. Also listed: 32 Bit.ly mashups.
At the bottom of many blog posts (including this one) and website entries you're likely to find a widget that allows sharing to social sites or emailing to a friend. ShareThis competes with other systems like AddThis and SocialTwist to give publishers an easy-to-install sharing method.