2D Toolkit provides a completely proprietary sprite implementation. Though it can be used alongside Unity's 2D systems, the two are completely separate and require different code to utilize.
The atlas font editor that comes with ex2D is fantastic and makes it very easy to manage and modify the fonts in your project. Key features:
Support fonts export from BMfont and Hiero.
Multiple fonts can be put together in one big texture atlas to save draw calls.
Fonts can also be put together with other texture sprite to save draw calls.
Manage fonts easily in the atlas editor.
The UX for editing sprite animations with ex2D is simply better then any of the alternative frameworks. You can:
Scale and scroll enabled time line editor.
Move, add, remove and insert Frame Element by dragging and dropping them directly.
Adjustable single frame length to make animation creating more versatile.
Support adding animation events directly in the timeline editor.
Preview animation result in the editor.
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