(There's no video for Script Debugger 3.0.9 yet. Please contribute to MR and add a video now!)
License, courtousy of the developer: LNS034-092-098
Script Debugger is an integrated development environment focused entirely on AppleScript. This focus allows Script Debugger to deliver a suite of tools that make AppleScript development amazingly productive. Features like the dictionary explorer allow you to look directly into any application’s live scripting interface and step wise debugging with the ability to see the state of all your variables make AppleScript usable in a way you've never experienced before.
SD3.0.9Install.hqx (9.39 MiB / 9.85 MB)
MacOS 9 - LNS034-092-098
22 / 2016-09-30 / 2016-09-30 / 8fbcd9415021ea76ab783e8d1cb0b6a8d711752b
Emulating this? It should run fine under: QEMU