Nimbus is a toolkit for experienced iOS software designers. It provides well-documented, modular components that solve a number of common iOS software requirements.
It includes: a rich text label with hyperlinks; a web view controller; a simple approach to table models, radio groups, and table actions; standardized interapp communication, and powerful debugging tools, amongst many other features.
SDK for Apple
NIDataStructures and NINavigationAppearance have been deleted.
Misc compiler fixes as Xcode's been updated over the years.