No clue what happened to the original, but here's a post which lists what they had on their list: http://sordyl.info/2011/03/15/10-ios-libraries-to-make-your-...

MBProgressHUD – Progress Indicator Library

ASIHttpRequest – HTTP Network Library

JSON Framework – JSON Support

Flurry – Detailed Usage Statistics

RegexKitLite – Regular Expression Support

Facebook iOS SDK – Facebook API Library

SDWebImage – Simple Web Image Support

GData client – iPhone library for all of Google’s services

CorePlot – 2D Graph Plotter

Three20 – General iOS Library