beta
test		 JSKit
JSKit is an open-source framework that provides an Objective-C based interface around JavaScript core for intergrating JavaScript into Cocoa applications.
0.1b1
Widgetarium
Widgetarium is an IDE for developing Dashboard widgets, with syntax aware editors for JavaScript, HTML & CSS, widget packager, Dashboard debugging emulator and source level debugger.
1.0a
beta
test		 ScrIDE
ScrIDE is a generic, extensible scripting IDE (including debugger support)
0.4
beta
test		 gandbug
gandbug is a runtime debugger for Cocoa applications
1.0b4
beta
test		 IDEKit
IDEKit is an open-source framework that provides programmer source code editing, including syntax coloring, popup functions, and split frames
0.3.1