IRecommended Shapes Editing Tools

Hackvil 1.0
An enhanced version of Anvil with an improved interface and superior Balloon Help

CLUT Modifier 1.2.2
Import and export color tables that can be modified in ResEdit.

Custom Set Remover

Remove the bulky 16-bit bitmaps from your Shapes file

1-10 Twiddler 1.0.1
Edit the Number of Views settings for sequences. (Something Anvil doesn't do very well)

Shapes Juggler 1.3

Creates Shapes patches for distributing scenarios. Use in conjunction with ResEdit to duplicate entire collections.

ResEdit 2.1.3
Edit color tables in conjunction with CLUT Modifier, and swap the ID numbers of exported Shapes Juggler collections.

IShapes Editing Tutorials

Hamish Sanderson's Anvil MasterClass
The ultimate guide to editing the Shapes file. Hamish reveals the nightmarish complexity of Anvil and teaches you to master the beast.

Shapes Editing, Part 1
More on Shapes, focusing specifically on the art of circumventing Anvil's bugs.

Shapes Editing, Part 2
Still more on Shapes editing, from the only name you can trust in the Anvil business.