Version 2.0, with a very different look. I also decided to name the application SPIN.
This time, instead of viewing frames as a long line, you build the sheet in the GUI, previewing it as you go. The sheet consists of animations, and they in turn consist of frames.
Animations can be dragged around with the box on the left. They will snap back, however, unless you have another animation to move them relative to each other.
Like the old application, you can set the number of columns. However, this time it's animation specific, so you can make better use of the space.
Another feature from the older version, now changed to be on an animation basis, rather than global, is the frame separation.
Background colour is still a global option. You can set a background colour or remove it. If you have no background colour, though, some filetypes will export with a white background due to lack of alpha support.
Here, we see a frame inside an animation is selected. Notice some different controls have been highlighted on the toolbar.
Frames can be dragged around to rearrange them, as in the old version.
Here we see a second animation, which has a whole separate panel for it.
Here's something interesting. Frames can be dragged from one animation, and dropped into another. This will change which animation the frame belongs to.
By selecting an animation, and hitting the preview button, you can preview an animation. You can look at it frame by frame, or set the FPS and watch it play.
When saving these files, they use slightly different formats to the old version, though some of the old filetypes can still be opened.
Lastly, these are the filetypes you can export your image as. Sorry, still no .gif.