ANONYMOUS  I keep looking at Squeak, but ... it's got the same problem that all the other Smalltalk derivatives do: it's all or nothing. If you want the nice pure OO language you have to take the whole 1978-industrial pre-iconic barebones user interface as well. Even if you're wiling to develop a binding to the native toolkits, you'll have to live in 1978 while you're doing it.

If I want to develop software in 1978 I'll use BSD... at least then I can glue my K&R-C pieces into a GUI that someone else is interested in using.

I love Smalltalk as a programming language, but we've made some advances in the last few decades. Let me run it from the shell and ProjectBuilder and give me a class library that'll talk to Cocoa...  
(Version 3.6)

JOHN-REED MAFFEO  Squeak is the most powerful development tool that I have ever used in 25 years of professional programming in Finance, Accounting, Manufacturing, Cartography, and general hacking around.

It runs on anything! This is not just a Mac tool. It runs on IBM Mainframes, *nix, Windows, Acorn, >>>bare chips on development boards  
(Version 3.5b8)