Objective-Smalltalk is a re-imagining of Objective-C for the 21st century. Like Objective-C, it blends features from Smalltalk and C, but instead of adding some Smalltalk features to C, it adds ideas from Objective-C to Smalltalk.
It is intended as a full-stack language capable of complementing or replacing Objective-C for iOS and Mac OS X programming as well as replacing most scripting language use in those environments. It is not Smalltalk-80 compatible.