(ASBoxer's still just a working title, so any suggestions are welcome!)

Pulled from the wiki of the (private) project:

What is ASBoxer? ASBoxer is a tool that is primarily used to create hitboxes and hurtboxes for spritesheets, much akin to those in fighting games and other similar games. The program outputs either an XML or a JSON file depending on your choice, and they contain the positions (x and y) and properties (width, height, box type, "layers" and user-specified "tags") of the boxes, each of which can be parsed automatically to make hitbox creation much easier on the programmer / artist / whomever concerned.

Features:

• Creating boxes for a particular image - Note that it's "boxes" for an "image"; you can create your own box types (there are two by default, hitboxes and hurtboxes) and use animated GIF files, too!
• Dockable Panels that can be split up into their own windows, sorta like GIMP + Flash
• Exporting box data to XML or JSON
• Converting spritesheets into GIF files, and vice versa (png ↔ jpg ↔ jxr)
• Previewing animations in application
• Motion tracking (planned)
• Clipboard support
• Pie Menu support
• Plugin (shader) support - Can apply effects to spritesheet
• Timeline support - kinda like Flash, with layers and frames. Frames are made by splitting a spritesheet or GIF into frame rectangles or its original frames, respectively.
• Native menus (top-bar, etc.)

There's obviously more of this in detail, which is covered in my previous post. Screenshots soon to follow! I promise the wait will be worth it.