As of late 2009, there are three widely available and actively maintained setups to choose from - Classic WB, AmigaSYS and AmiKit.
Classic Workbench, by EAB member Bloodwych, is an excellent preinstalled Workbench 3 package. It is designed to work on real Amigas and also works with emulated Amiga’s (using WinUAE).
Official website: http://classicwb.abime.net/
Support Forum: project.ClassicWB
N.B. You will need a valid Workbench 3.0 or 3.1 disk.
A Hungarian WinUAE Mirror group has made a new kind of AIAB. This project is called AmigaSYS.
This setup can be downloaded from the website below, or can be found in the Amiga Forever 2009 Plus or Premium package, along with AmiKit.
Official website: http://amigasys.extra.hu/
N.B. Workbench 3.0/3.1 and Extras disks are required for installation. Optional Amiga OS3.9 CD
"AmiKit is the compilation of the best Amiga (free/shareware) programs around. To be brief, AmiKit is all you need if you want to experience a high-end Classic Amiga system. It contains many expansions and add-ons (more than 25.000 files are included in AmiKit!) that turn the default AmigaOS installation into a completely renewed and fresh environment. This pre-configured package is designed for immediate use. "
This setup can be downloaded from the website below, or can be found in the Amiga Forever 2009 Plus or Premium package, along with AmigaSYS.
Official website: http://amikit.amiga.sk/
N.B. Requires: AmigaOS 3.5 CD, AmigaOS 3.9 CD, AmigaOS XL CD (Amithlon) or Amiga Forever 2005 or later (Plus or Premium Edition)
Amiga In A Box was one of the first Workbench packs publicly available - however, it is no longer maintained.