4 free tools to create Animated PNG (APNG)
http://www.instantfundas.com/2009/07/4-fre...imated-png.html

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1. APNG Editor
2. APNG Anime Maker
4. JapngEditor
4. APNG Assembler


Why APNG is better than GIF? From Mozilla Labs:
The two most apparent problems are that GIF images can only contain 256 colors, and lack support for partially-transparent pixels. This results in images which often look grainy or rough, and which do not smoothly blend into their background.