Three20
Three20 is an Objective-C library for iPhone developers
three20 is a historically significant iOS framework originally extracted from Facebook’s app, providing a broad set of utilities and UI components for early iPhone development. It introduced a URL-based navigation system, image/caching pipelines, styled text labels, and a photo browser that many apps adopted before iOS shipped similar features. The library championed modularity with packages you could include piecemeal, helping teams standardize networking, model objects, and table view...