BlitzMax 1.0 (by Blitz Research)
BlitzMax is the new, next generation game programming language from Blitz Research.

py2app 0.2 (by undefined.org)
A distutils extension which converts python scripts into executable Mac OS X applications, able to run without requiring an existing Python installation.

RBSplitView 1.1.3 (by Rainer Brockerhoff)
RBSplitView is a replacement for Cocoa's NSSplitView.

Apple Xcode 2.4.1 (by Apple)
Xcode features dead-code stripping, remote debugging, speed improvements to the gnu C++ compiler, or gcc, code completion for Java and AppleScript, native build system support for AppleScript, an enhanced debugger with memory and globals browsers and the ability to display file static variables, fas

Axiomatic Multi-Platform C 1.5.2 (by Axiomatic Solutions Sdn Bhd)
AMPC offers you a C Integrated Development Environment (IDE) that generates Java Bytecode.